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三氯乙烯_79-01-6,三氯乙烯
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三氯乙烯

BW901003 {{goodObj.price > 0 ? '¥' + goodObj.price : '咨询'}} ¥{{goodObj.sell_price || 0}} 咨询 79-01-6 0.5mL {{goodObj.date}} 秦境 {{item.norm}} 99.7% {{inventory}}
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:《水质 三氯乙烯的测定 顶空气相色谱法》
适用范围 适用于饮用水、地表水、地下水和工业废水中三氯乙烯的测定。
核心检测方法 顶空进样-气相色谱法(HS-GC),使用氢火焰离子化检测器(FID)。
检出限与定量限 方法检出限为0.005 mg/L,定量下限为0.02 mg/L。
质控样品要求 每批次需包含空白样品、平行样和加标回收样,回收率应控制在80%-120%。
关键实验步骤 样品顶空平衡温度60℃,平衡时间30分钟;色谱柱为毛细管柱(如DB-5),柱温程序升温。
特别说明 需避免样品保存时间过长,建议24小时内完成分析;干扰物需通过色谱分离排除。
行业标准:《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 适用于地下水和废水中三氯乙烯及其他挥发性有机物(VOCs)的测定。
核心检测方法 吹扫捕集-气相色谱/质谱联用法(GC-MS),内标法定量。
检出限与定量限 三氯乙烯方法检出限为0.03 μg/L,定量限为0.1 μg/L。
质控样品要求 需添加替代物(如氟苯)监控回收率,每批样品至少1个实验室空白。
关键实验步骤 吹扫时间11分钟,解吸温度180℃;质谱采用全扫描模式(SCAN)定性。
特别说明 样品需冷藏保存,7天内完成分析;高浓度样品需稀释以避免污染捕集管。
国家标准:《生活饮用水标准检验方法 有机物指标》
适用范围 生活饮用水中三氯乙烯及其他有机污染物的检测。
核心检测方法 液液萃取-气相色谱法(LLE-GC),电子捕获检测器(ECD)。
检出限与定量限 三氯乙烯检出限为0.1 μg/L,定量限为0.3 μg/L。
质控要求 每10个样品需加测1个平行样,相对偏差≤20%。
关键实验步骤 样品用正己烷萃取,浓缩后进样;色谱柱推荐使用HP-5(30 m×0.32 mm×0.25 μm)。
特别说明 避免使用含氯溶剂清洗玻璃器皿,防止交叉污染。

以上信息仅供参考,请以相应标准的原文为准!