1,2-二溴乙烷_单标_有机类_标准物质_萘析商城

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1,2-二溴乙烷

BW901004

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106-93-4

1mL

秦境

99.0%

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1,2-二溴乙烷介绍：

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 external 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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国家标准：生活饮用水标准检验方法第8部分：有机物指标

标准名称及标准号	GB/T 5750.8-2023 生活饮用水标准检验方法第8部分：有机物指标
适用范围	适用于生活饮用水及其水源水中1,2-二溴乙烷的检测，涵盖水样前处理、仪器分析及结果计算。

核心检测方法

气相色谱-质谱法（GC-MS），采用毛细管色谱柱分离，SIM模式进行定性定量分析。

检出限与定量限

检出限为0.02 μg/L，定量限为0.05 μg/L，需通过标准曲线法验证线性范围。

质控样品要求

每批次样品需包含空白样、平行样及加标样，加标回收率应控制在80%-120%。

关键实验步骤

1. 水样经固相萃取浓缩；
2. 氮吹定容后进样；
3. GC-MS分析时需优化离子源温度（230℃）及传输线温度（280℃）。

特别说明	1. 实验需在通风橱内操作，避免接触皮肤； 2. 标准溶液需避光冷藏保存，有效期3个月； 3. 质谱调谐需通过PFK校准。

以上信息仅供参考，请以相应标准的原文为准！