1,2-二氯乙烷_单标_有机类_标准物质_萘析商城

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1,2-二氯乙烷

BW901079

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107-06-2

0.5mL

秦境

99.9%

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1,2-二氯乙烷介绍：

Reference Material

This certificate is designed in accordance with ISO 17034 and ISO Guide 31. This reference material (RM) was designed,produced and verified in accordance with ISO/IEC 17025, ISO 17034 and a registered quality management system ISO9001.

Uncertainty

The certified value(s) and uncertainty(ies) are determined in accordance with ISO 17034 with an 95% confidence level (k=2). Uncertainty is based on the Total Combined Uncertainty, including uncertainties of characterisation, homogeneity and stability testing. Stability values are based on real evidence opposed to simulation.

The producer certifies that this reference material meets the specification stated in this certificate until the expiry date, provided it is stored unopened at the recommended temperature herein. Product warranties for this reference material are set out in the terms and conditions of purchase.

Intended Use

This RM is intended for use in a laboratory as a calibration and quality control standard or in method development for analytical techniques.

Safety

Proper precautions should be observed while handling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to the national standards (DKD). The calibration of the balances is verified daily internally and annually by an external7 accredited calibration service. Chromatographic methods are traceable to the International System of Units (SI).

Homogeneity

Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO 17034.

Storage

The RM should be stored in the original sealed container at the indicated temperature.

Instructions for use

It is recommended to use 1 mg as the minimum sample size and if less material is used, to increase the certified uncertainty by a factor of two for half sample and four for a quarter of sample. If storage after opening is necessary, the RM should be tightly closed and kept from light and moisture. If the RM was in a sealed ampoule, it should be transferred to a vial with minimum head space.

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标准名称及标准号

标准名称	生活饮用水标准检验方法第8部分：有机物指标（GB/T 5750.8-2023）
标准号	GB/T 5750.8-2023

适用范围

适用于生活饮用水及其水源水中1,2-二氯乙烷的检测，包括水源水、出厂水、末梢水等不同水样的分析。

核心检测方法

采用气相色谱-质谱联用法（GC-MS）。水样经吹扫捕集或液液萃取前处理后，通过色谱柱分离，质谱检测器定性定量分析。

检出限与定量限

检出限	0.10 μg/L
定量限	0.30 μg/L

质控样品要求

每批次样品需加入空白样、平行样和加标样（加标浓度为实际样品浓度的1-2倍），回收率应控制在80%-120%，相对标准偏差（RSD）≤20%。

关键实验步骤

1. 水样预处理：调节pH至中性后，用高纯氮气吹扫去除干扰气体；
2. 捕集与解吸：低温捕集挥发性有机物后快速热解吸；
3. 色谱条件：DB-624色谱柱，程序升温（40℃→220℃）；
4. 质谱参数：EI离子源，选择离子监测模式（m/z 62、64）。

特别说明

1. 避免使用含卤化物的溶剂或耗材，防止交叉污染；
2. 分析过程中需全程避光保存样品，防止1,2-二氯乙烷光解；
3. 实验室环境温度应控制在20℃±2℃，湿度≤60%。

以上信息仅供参考，请以相应标准的原文为准！