三氯乙烯_单标_有机类_标准物质_萘析商城

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三氯乙烯

BW901003

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79-01-6

1mL

秦境

99.7%

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三氯乙烯介绍：

Method of Characterisation

GC/FID

Batch Information

Water Content: <0.1% (by Karl-Fischer-Titration)

Uncertainty

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

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

Intended Use

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

Safety

Proper precautions should be observed whilehandling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements arecalibrated with weights traceable to the national standards (DKD). Thecalibration of the balances is verified daily internally and annually by anexternal7 accredited calibration service. Chromatographic methods are traceableto the International System of Units (SI).

Homogeneity

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

Storage

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

Instructions for use

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

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国家标准解读（三氯乙烯相关）

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	适用于生活饮用水中三氯乙烯及其他挥发性有机物的测定，包括水源水、出厂水和末梢水。
核心检测方法	顶空气相色谱法（HS-GC），采用毛细管色谱柱分离，ECD检测器或MS检测器定量。
检出限与定量限	检出限为0.1 μg/L，定量限为0.3 μg/L（依据仪器灵敏度调整）。
质控样品要求	每批次需包含空白对照、平行样及加标回收样，加标量应为待测物浓度的0.5-2倍，回收率范围85%-115%。
关键实验步骤	1. 样品采集后需冷藏避光保存并在7日内分析； 2. 顶空平衡温度60℃±1℃，平衡时间30 min； 3. 色谱柱程序升温，初始温度40℃保持5 min，以10℃/min升至200℃。
特别说明	样品中若存在四氯化碳等干扰物需通过色谱柱选择或前处理消除，结果报告需注明是否扣除本底干扰。

标准名称及标准号	HJ 639-2012《水质挥发性有机物的测定吹扫捕集/气相色谱-质谱法》
适用范围	地表水、地下水、工业废水和生活污水中三氯乙烯等54种挥发性有机物的检测。
核心检测方法	吹扫捕集前处理结合GC-MS分析，内标法定量，使用DB-5MS色谱柱（30 m×0.25 mm×1.4 μm）。
检出限与定量限	三氯乙烯方法检出限为0.02 μg/L，定量下限为0.08 μg/L。
质控样品要求	每10个样品需插入1个实验室空白，平行样相对偏差应≤20%，内标物回收率60%-130%。
关键实验步骤	1. 样品瓶需无顶空并密封，保存于4℃且48小时内分析； 2. 吹扫时间11 min，捕集阱温度40℃； 3. 质谱扫描模式为全扫描（m/z 35-270）。
特别说明	高浓度样品需稀释后分析，若存在颗粒物需经0.45 μm滤膜过滤。

以上信息仅供参考，请以相应标准的原文为准！