GB/T 35828-2018 in English
VALIDDetermination of chromium,arsenic,cadmium,stibium,and lead in cosmetics—Inductively coupled plasma mass spectrometry
- Issued on:2018-02-06
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 35828-2018化妆品中铬、砷、镉、锑、铅的测定 电感耦合等离子体质谱法》由TC257(全国香料香精化妆品标准化技术委员会)归口,TC257SC2(全国香料香精化妆品标准化技术委员会化妆品分会)执行,主管部门为中国轻工业联合会。
Introduction
GB/T 35828—2018 Standard Overview
GB/T 35828—2018 "Determination of chromium, arsenic, cadmium, antimony and lead in cosmetics by inductively coupled plasma mass spectrometry" is one of the core standards in the field of cosmetics testing in my country. This standard specifies the method of determining chromium, arsenic, cadmium, antimony and lead in cosmetics by inductively coupled plasma mass spectrometry (ICP-MS), which is applicable to a variety of cosmetic products such as face creams, lotions, lip glosses, etc.
Background and significance of standard formulation
This standard is formulated based on the requirements of the "Technical Specification for Safety of Cosmetics (2015 Edition)" and clarifies the detection methods for the prohibited substances chromium, arsenic, cadmium, antimony and lead. These substances are listed as prohibited raw materials because they may cause serious harm to human health. Although my country has not yet stipulated the limit values of chromium and antimony, this standard provides a scientific basis for the detection of these elements in cosmetics.
Technical framework and core content
The core content of this standard includes:
- Principle and application of inductively coupled plasma mass spectrometry (ICP-MS)
- Requirements for reagents and materials
- Technical parameters of instruments and equipment
- Sample preparation and digestion methods
- Preparation of standard series
- Calculation and analysis of measurement results
Core technical indicator comparison table
| Element | Detection limit (mg/kg) | Quantification limit (mg/kg) | Analysis method |
|---|---|---|---|
| Element | Detection limit (mg/kg) | Quantification limit (mg/kg) | Analysis method |
| Chromium (Cr) | 0.07 | 0.2 | ICP-MS |
| Arsenic (As) | 0.07 | 0.2 | ICP-MS |
| Cadmium (Cd) | 0.04 | 0.1 | ICP-MS |
| Antimony (Sb) | 0.07 | 0.2 | ICP-MS |
| Lead (Pb) | 0.07 | 0.2 | ICP-MS |
Instrument Principle and Process
The working principle of inductively coupled plasma mass spectrometry (ICP-MS) involves the following key steps:
- Sample digestion: completed by microwave digestion or graphite digestion system to ensure that the elements to be measured are completely released.
- Atomization and ionization: The sample solution enters the plasma torch flame through the atomizer to form positively charged ions.
- Mass spectrometry separation: Ions are separated and detected according to the mass-to-charge ratio (m/z), and the signal intensity is proportional to the element concentration.
- Data processing: Quantitative analysis is achieved through the standard curve method, and the matrix interference is eliminated in combination with the internal standard method.
Implementation suggestions and precautions
To ensure the accuracy and reliability of the test results, it is recommended in actual operation:
- Select reagents and instruments in strict accordance with standard requirements.
- Standardize the sample preparation process to avoid external contamination.
- Regularly calibrate the instrument to ensure that the sensitivity and precision meet the requirements.
- Establish a quality control system, including blank tests, parallel sample analysis, etc.

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