薄层色谱扫描系统——全波长光谱扫描·多模式光学检测·智能化数据分析·微量物证与文书鉴定专业分析平台（刑事技术文件检验/微量物证鉴定/化学物证分析核心装备）

 薄层色谱扫描系统——全波长光谱扫描·多模式光学检测·智能化数据分析·微量物证与文书鉴定专业分析平台（刑事技术文件检验/微量物证鉴定/化学物证分析核心装备）

〖重要合规前置声明〗 本产品为国家管制类刑事技术检验鉴定专用特种装备，仅面向具备法定鉴定资质与刑事技术检验许可的各级公安机关刑事技术部门、人民检察院技术部门、司法鉴定机构及授权刑事技术实验室定向研发、生产与供应，严禁向任何个人、无资质企业及非授权单位销售或提供。本设备的购置、配备、使用与管理，必须严格遵守国家关于司法鉴定管理与刑事技术检验的法律法规与行业技术标准，必须由经过专业培训、取得相应刑事技术或理化检验岗位资质的人员规范操作，严禁无资质单位和个人违规购置、使用、转让本装备，严禁因违规操作导致检材污染、数据失真或鉴定结论偏差，严禁伪造、篡改或未经授权对外泄露通过本设备获取的检测数据与鉴定意见。

产品概述

薄层色谱扫描系统——全波长光谱扫描·多模式光学检测·智能化数据分析·微量物证与文书鉴定专业分析平台（亦称薄层色谱扫描仪、TLC Scanner）是一款集成高精度光学检测与智能分析功能的专业级分析仪器，属于公安刑事技术文件检验、微量物证鉴定及化学物证分析领域的核心分析装备。该产品依据薄层色谱分离原理，结合全波长光谱扫描技术，专为对书写材料、爆炸残留物、油脂、涂料等微量或复杂组分样品进行高灵敏度的分离、定性及定量分析深度定制，完美适配文件形成时间与真伪鉴定中的墨水、印油、墨粉成分分析，爆炸物及其残留物检验中的炸药成分分离与鉴定，交通肇事与盗窃案件中润滑油、油漆碎片等微量物证的种类鉴别与来源关联，以及海关缉私与食药犯罪侦查中的违禁物质筛查等多种专业场景。系统支持反射吸收、反射荧光、透射吸收、透射荧光四种检测模式，波长范围覆盖190 nm至800 nm，波长准确度优于1 nm，重现性优于0.2 nm，配合功能强大的winCATS工作站软件，能够为理化检验鉴定人提供全波长高精度光谱扫描、多模式光学检测、智能化数据分析、标准化数据库管理的一体化物证鉴定分析能力，是提升法庭科学实验室检验能力与效率、保障鉴定结论科学性与公正性的关键基础性刑事技术装备。

技术原理

该系统基于薄层色谱分离与光谱扫描检测的联用原理工作。在分离层面，样品溶液被点样于薄层色谱板一端，随后在密闭展开缸中通过毛细作用使流动相沿色谱板上升。样品中各组分因在固定相与流动相中分配系数的差异，以不同速率迁移，最终在色谱板上形成彼此分离的斑点。即使颜色相近的墨水、油墨、涂料、油脂或爆炸物，因其化学组成与结构不同，在相同展开条件下将呈现出斑点数量、形状、比移值及荧光特性的显著差异。

在检测层面，系统集成了全波长光谱扫描功能，配备氘灯、卤钨灯、高压汞灯三种高性能光源并支持自动切换。光学系统支持反射吸收、反射荧光、透射吸收、透射荧光四种检测模式，可根据样品特性与检测目标灵活选择最优方案，最大化信息获取能力。波长范围覆盖190 nm至800 nm，波长准确度优于1 nm，重现性优于0.2 nm，最大扫描速度达100 mm/s，配合自动样品台可实现高通量板载样品的快速全谱扫描。

在智能化数据分析层面，搭载功能强大的winCATS工作站软件，提供从斑点识别、光谱比对、曲线积分到多组分定量的完整工作流程。软件支持建立标准品数据库与样本谱库，便于进行快速检索与比对分析。所有操作步骤与原始数据均被完整记录，符合司法鉴定质量管理规范对检验数据可追溯性的严格要求。

核心功能与合规实战价值

全波长高精度光谱扫描与多模式光学检测，为微量物证组分分析提供全面的光谱数据支撑
系统波长范围覆盖190 nm至800 nm，涵盖紫外与可见光区，满足绝大多数有机化合物的检测需求。波长准确度优于1 nm，重现性优于0.2 nm，确保检测结果的精确性与可比性。支持反射吸收、反射荧光、透射吸收、透射荧光四种检测模式，可根据样品特性灵活选择最优方案。在文件检验中，鉴定人利用全波长扫描功能获取不同墨水斑点的紫外-可见吸收光谱与荧光光谱，通过比对光谱曲线的峰形、峰位及相对强度差异，可实现不同品牌、不同批次墨水的种类鉴别，为文件真伪与变造鉴定提供多维度的光谱证据。检测过程不消耗样本，可为后续质谱等其他分析方法保留检材。

标准化数据库管理与智能化数据分析，满足司法鉴定对检验结果客观性与可复核性的规范要求
搭载的winCATS工作站软件支持建立标准品数据库与样本谱库，鉴定人可将已知标准样品的光谱数据、比移值及斑点特征录入数据库，在检验未知样品时进行快速检索与自动比对。仪器化的扫描与数据处理取代了传统目视判读的主观性，所有谱图与数据均可存档并接受第三方复核，保障了鉴定结论的客观性与公正性。该标准化数据管理能力完全契合司法鉴定程序通则关于检验数据须完整记录、可追溯的规范要求。

高灵敏度微量检测与多组分并行分析，适应刑侦案件中检材量有限的实战挑战
系统对微量样本具有出色的检测能力，一次展开可同时分离和检测样品中的多个组分，并提供各组分的相对含量信息，获得丰富的“化学指纹”图谱。在爆炸物残留检验中，鉴定人可对现场提取的微量爆炸尘土中的炸药成分、助燃剂及稳定剂等同时进行分离与鉴定，辅助判断炸药种类与来源。在交通肇事逃逸案件中对微量油漆碎片的层析分析，可同时获得树脂基料、颜料及添加剂的多组分信息，为嫌疑车辆与现场之间的物证关联提供科学依据。

合规应用场景

文件形成时间与真伪鉴定场景
在文件检验鉴定中，鉴定人使用本系统对争议文件上的墨水、印油、墨粉等书写材料进行薄层色谱分离与光谱扫描分析。通过对染料、添加剂等成分的比例变化或老化产物进行精密分析，为文件形成时间的推断及篡改、伪造文件的鉴别提供科学依据。方法权威，标准兼容——薄层色谱法是法庭科学中检验染料等有机混合物的经典标准方法之一，其结论在司法实践中具有广泛的认可度。

爆炸物及其残留物检验场景
在涉爆案件的理化检验中，鉴定人使用本系统对现场提取的爆炸尘土、可疑粉末中的炸药成分、助燃剂、稳定剂等进行分离与鉴定。各组分的比移值与光谱特征与标准品数据库进行比对后，可辅助判断炸药种类、来源及制作工艺，为案件侦查与法庭审理提供关键科学证据。

油脂与涂料等微量物证分析场景
在交通事故、盗窃、破坏案件中，鉴定人使用本系统对遗留的润滑油、油漆碎片、化妆品等复杂有机混合物进行组分“指纹”比对。各组分斑点的数量、比移值及光谱特征构成该物质的特征图谱，通过样品与检材的特征图谱比对，可实现种类鉴别或来源关联，为嫌疑人与现场之间的物证关联提供客观依据。

核心技术参数

光学检测系统方面，波长范围覆盖190 nm至800 nm，波长准确度优于1 nm，重现性优于0.2 nm。测量模式支持反射吸收、反射荧光、透射吸收、透射荧光四种模式。光源标配氘灯、卤钨灯、高压汞灯，支持自动切换。扫描性能方面，最大扫描速度达100 mm/s，配合自动样品台实现高通量全谱扫描。

数据处理方面，搭载winCATS工作站软件，兼容Windows系统，提供单波长、双波长及多波长扫描，光谱扫描，峰的积分、峰高和峰面积的计算，单点和多点标准曲线，线性和非线性校正方法，光谱图的三维及重叠显示等功能。

配套设备方面，半自动点样仪采用喷雾式点样，点样平台最大可放20×20cm薄板，点样带长度0至190mm。全自动点样仪支持接触式点状点样及喷雾式带状、方形点样，点样体积100nl至1ml。全自动多级展开仪最多支持5种展开剂、99步展开，展开距离优于±1mm。

合规实战应用案例

某市公安刑事科学技术研究所文件检验室受理一起涉嫌合同变造案件，需对争议合同上的签名墨水与正文墨水进行种类比对。鉴定人将签名与正文的微量墨水提取物点样于薄层色谱板，经展开分离后进行全波长光谱扫描。系统获取的两份墨水斑点的紫外-可见吸收光谱在峰形与峰位上呈现明显差异，荧光光谱也存在不同，鉴定人据此认定签名与正文使用了不同种类的墨水。结合签名部位存在擦刮痕迹的形态学检验结果，鉴定人出具了合同签名系事后添加的鉴定意见，鉴定结论在法庭质证中被依法采信。

某省公安厅理化检验室在侦办一起爆炸案件时，对现场提取的爆炸尘土进行薄层色谱分离与光谱扫描分析。鉴定人将样品提取液与多种常见炸药标准品同步点样展开，通过比对斑点比移值与光谱特征，成功检出样品中含有硝铵类炸药成分及特定稳定剂。该结果为判断炸药种类与追溯炸药来源提供了关键的科学依据，为案件侦破方向的确定发挥了重要作用。

厂家信息：北京毕思特联合科技有限公司
网址：https://www.bestlh.com
地址：北京市亦庄开发区经海六路一号院尖子班 C9 独栋
电话：010-56526048

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Thin-Layer Chromatography Scanning System (TLC Scanner) — Full-Wavelength Spectral Scanning · Multi-Mode Optical Detection · Intelligent Data Analysis · Professional Analytical Platform for Trace Evidence & Document Examination (Core Equipment for Criminal Technical Document Examination / Trace Evidence Identification / Chemical Evidence Analysis)

Global site URL：https://xilankeji.en.alibaba.com

Important Compliance Precaution This product is a state-controlled specialized equipment for criminal technical forensic examination and identification, which is solely developed, produced and supplied to authorized entities such as criminal technical departments of public security organs, technical departments of people's procuratorates, forensic identification institutions, and authorized criminal technical laboratories with statutory identification qualifications and criminal technical examination permits. Any sale or supply to individuals, non-qualified enterprises and unauthorized units is strictly prohibited. The procurement, deployment, use and management of this equipment must strictly comply with national laws, regulations and industrial technical standards regarding judicial forensic management and criminal technical examination. Operation must be carried out exclusively by professionally trained personnel holding corresponding criminal technical or physico-chemical examination post qualifications. Unauthorized units and individuals are strictly forbidden from purchasing, using or transferring this equipment. Any contamination of evidence, distortion of data, or deviation in identification conclusions caused by improper operation, as well as the forgery, alteration, or unauthorized external disclosure of testing data and expert opinions obtained through this equipment, is strictly prohibited.

Product Overview

The Thin-Layer Chromatography Scanning System — Full-Wavelength Spectral Scanning, Multi-Mode Optical Detection, Intelligent Data Analysis, Professional Analytical Platform for Trace Evidence & Document Examination (also referred to as the Thin-Layer Chromatography Scanner or TLC Scanner) is a professional-grade analytical instrument integrating high-precision optical detection and intelligent analysis functions. It constitutes a core analytical equipment in the fields of criminal technical document examination, trace evidence identification, and chemical evidence analysis. Based on the principle of thin-layer chromatographic separation and combined with full-wavelength spectral scanning technology, this product is deeply customized for the high-sensitivity separation, qualitative and quantitative analysis of trace or complex component samples such as writing materials, explosive residues, oils and greases, and paints. It perfectly adapts to various professional scenarios, including the component analysis of inks, stamp inks, and toners for document dating and authenticity identification, the separation and identification of explosive components and residues in explosive examinations, the type identification and source correlation of trace evidence such as lubricating oils and paint chips in hit-and-run and burglary cases, and the screening of prohibited substances in customs anti-smuggling and food and drug crime investigations. The system supports four detection modes: reflection absorption, reflection fluorescence, transmission absorption, and transmission fluorescence, with a wavelength range covering 190 nm to 800 nm, wavelength accuracy better than 1 nm, and reproducibility better than 0.2 nm. Combined with the powerful winCATS workstation software, it provides physico-chemical examiners with an integrated evidence identification and analysis capability featuring full-wavelength high-precision spectral scanning, multi-mode optical detection, intelligent data analysis, and standardized database management. It is a key foundational piece of criminal technical equipment for enhancing the examination capability and efficiency of forensic science laboratories and for ensuring the scientific validity and impartiality of expert conclusions.

Technical Principle

This system operates on the combined principles of thin-layer chromatographic separation and spectral scanning detection. At the separation level, the sample solution is spotted onto one end of a thin-layer chromatography plate. The mobile phase then rises along the chromatography plate through capillary action within a sealed developing chamber. Due to differences in the partition coefficients of the various components in the sample between the stationary phase and the mobile phase, they migrate at different rates, ultimately forming separated spots on the chromatography plate. Even inks, oils, paints, or explosives of similar color will exhibit significant differences in the number, shape, Rf value, and fluorescence characteristics of their spots under the same developing conditions due to differences in their chemical composition and structure.

At the detection level, the system integrates a full-wavelength spectral scanning function, equipped with three high-performance light sources—a deuterium lamp, a tungsten-halogen lamp, and a high-pressure mercury lamp—with support for automatic switching. The optical system supports four detection modes: reflection absorption, reflection fluorescence, transmission absorption, and transmission fluorescence. The optimal mode can be flexibly selected based on the sample characteristics and the detection target to maximize information acquisition capability. The wavelength range covers 190 nm to 800 nm, with wavelength accuracy better than 1 nm and reproducibility better than 0.2 nm. The maximum scanning speed reaches 100 mm/s. Combined with the automatic sample stage, it enables high-throughput rapid full-spectrum scanning of plate-loaded samples.

At the intelligent data analysis level, the system is equipped with the powerful winCATS workstation software, providing a complete workflow from spot identification, spectral comparison, and curve integration to multi-component quantification. The software supports the establishment of standard substance databases and sample spectral libraries, facilitating rapid retrieval and comparative analysis. All operational steps and raw data are fully recorded, meeting the stringent requirements of judicial forensic quality management standards for the traceability of examination data.

Core Functions and Compliance Operational Value

Full-Wavelength High-Precision Spectral Scanning and Multi-Mode Optical Detection, Providing Comprehensive Spectral Data Support for the Component Analysis of Trace Evidence
The system's wavelength range covers 190 nm to 800 nm, encompassing the ultraviolet and visible light regions, meeting the detection needs of the vast majority of organic compounds. Wavelength accuracy is better than 1 nm, and reproducibility is better than 0.2 nm, ensuring the precision and comparability of the test results. It supports four detection modes: reflection absorption, reflection fluorescence, transmission absorption, and transmission fluorescence, allowing flexible selection of the optimal mode based on sample characteristics. In document examination, the examiner utilizes the full-wavelength scanning function to acquire the UV-Vis absorption spectra and fluorescence spectra of different ink spots. By comparing the differences in peak shape, peak position, and relative intensity of the spectral curves, the identification of different brands and batches of inks can be achieved, providing multi-dimensional spectral evidence for document authenticity and alteration identification. The detection process does not consume the sample, allowing the evidence to be preserved for subsequent analysis by other methods such as mass spectrometry.

Standardized Database Management and Intelligent Data Analysis, Meeting the Normative Requirements of Judicial Forensic Identification for the Objectivity and Reviewability of Examination Results
The equipped winCATS workstation software supports the establishment of standard substance databases and sample spectral libraries. The examiner can enter the spectral data, Rf values, and spot characteristics of known standard samples into the database, enabling rapid retrieval and automatic comparison when examining unknown samples. Instrumented scanning and data processing replace the subjectivity of traditional visual interpretation. All spectra and data can be archived and subjected to third-party review, ensuring the objectivity and impartiality of the expert conclusion. This standardized data management capability fully conforms to the normative requirements of the General Rules for Judicial Authentication Procedures that examination data must be fully recorded and traceable.

High-Sensitivity Trace Detection and Multi-Component Parallel Analysis, Adapting to the Practical Challenge of Limited Sample Quantity in Criminal Investigations
The system possesses excellent detection capability for trace samples. A single development can simultaneously separate and detect multiple components within a sample, providing relative content information for each component and yielding a rich "chemical fingerprint" spectrum. In the examination of explosive residues, the examiner can simultaneously separate and identify the explosive components, accelerants, and stabilizers in trace explosive dust collected from the scene, assisting in determining the type and source of the explosive. The chromatographic analysis of trace paint chips in hit-and-run cases can simultaneously obtain multi-component information on the resin binder, pigments, and additives, providing a scientific basis for the physical evidence link between a suspect vehicle and the scene.

Compliant Application Scenarios

Document Dating and Authenticity Identification Scenario
In document examination and forensic identification, the examiner uses this system to perform thin-layer chromatographic separation and spectral scanning analysis on writing materials such as inks, stamp inks, and toners on disputed documents. Through precise analysis of the proportional changes in components such as dyes and additives or the presence of aging products, a scientific basis is provided for the inference of document formation time and the identification of altered or forged documents. The method is authoritative and standard-compatible—thin-layer chromatography is one of the classic and standard methods in forensic science for the examination of organic mixtures such as dyes, and its conclusions have broad recognition in judicial practice.

Explosives and Explosive Residue Examination Scenario
In the physico-chemical examination of explosive-related cases, the examiner uses this system to separate and identify the explosive components, accelerants, and stabilizers present in explosive dust and suspicious powders collected from the scene. By comparing the Rf values and spectral characteristics of each component against a standard substance database, it is possible to assist in determining the type, source, and manufacturing process of the explosive, providing key scientific evidence for case investigation and court proceedings.

Trace Evidence Analysis Scenario for Oils, Greases, and Paints
In traffic accident, burglary, and sabotage cases, the examiner uses this system to perform component "fingerprint" comparison on complex organic mixtures such as lubricating oils, paint chips, and cosmetics left at the scene. The number of component spots, their Rf values, and their spectral characteristics constitute the characteristic spectrum of the substance. By comparing the characteristic spectra of the sample and the evidence, type identification or source correlation can be achieved, providing objective evidence for the physical evidence link between the suspect and the scene.

Core Technical Parameters

In terms of the optical detection system, the wavelength range covers 190 nm to 800 nm, with wavelength accuracy better than 1 nm and reproducibility better than 0.2 nm. The measurement modes support four types: reflection absorption, reflection fluorescence, transmission absorption, and transmission fluorescence. The light sources are equipped as standard with a deuterium lamp, a tungsten-halogen lamp, and a high-pressure mercury lamp, with support for automatic switching. For scanning performance, the maximum scanning speed reaches 100 mm/s, enabling high-throughput full-spectrum scanning with the automatic sample stage.

For data processing, the system is equipped with winCATS workstation software, compatible with the Windows operating system. It provides functions including single-wavelength, dual-wavelength, and multi-wavelength scanning; spectral scanning; peak integration, peak height, and peak area calculation; single-point and multi-point standard curves; linear and non-linear calibration methods; and three-dimensional and overlay display of spectra.

Regarding ancillary equipment, the semi-automatic sample applicator employs a spray-on spotting method, with a spotting platform capable of holding a maximum 20×20 cm thin-layer plate, and a band length of 0 to 190 mm. The fully automatic sample applicator supports contact spot spotting and spray-on band or square spotting, with a spotting volume ranging from 100 nl to 1 ml. The fully automatic multi-stage developing chamber supports up to 5 developing solvents and up to 99 development steps, with a development distance accuracy better than ±1 mm.

Compliant Field Application Cases

The document examination laboratory of a municipal criminal technical science research institute accepted a suspected contract alteration case. It was necessary to perform a type comparison between the signature ink and the body text ink on the disputed contract. The examiner spotted micro-extracts of the signature and body text inks onto a thin-layer chromatography plate. After development and separation, full-wavelength spectral scanning was performed. The UV-Vis absorption spectra of the two ink spots obtained by the system showed significant differences in peak shape and position, and the fluorescence spectra also differed. Based on this, the examiner determined that the signature and the body text were written with different types of ink. Combined with the morphological examination finding of erasure marks at the signature location, the examiner issued an expert opinion that the contract signature had been added afterwards. The identification conclusion was lawfully admitted during court cross-examination.

While investigating an explosion case, the physico-chemical examination laboratory of a provincial public security department performed thin-layer chromatographic separation and spectral scanning analysis on the explosive dust collected from the scene. The examiner spotted the sample extract synchronously alongside multiple common explosive standards for development. By comparing the spot Rf values and spectral characteristics, ammonium nitrate explosive components and a specific stabilizer were successfully detected in the sample. This result provided a critical scientific basis for determining the type of explosive and tracing its origin, playing an important role in establishing the direction of the case investigation.

Manufacturer Information: Beijing Best United Technology Co., Ltd.
Website: https://www.bestlh.com
Address: Building C9, Jianziban, No.1 Courtyard, Jinghai Sixth Road, Yizhuang Development Zone, Beijing
Tel: 010-56526048