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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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三氯乙烯介紹：

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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國(guó)家標(biāo)準(zhǔn)解讀（三氯乙烯相關(guān)）

標(biāo)準(zhǔn)名稱(chēng)及標(biāo)準(zhǔn)號(hào)	GB/T 5750.8-2023《生活飲用水標(biāo)準(zhǔn)檢驗(yàn)方法第8部分：有機(jī)物指標(biāo)》
適用范圍	適用于生活飲用水中三氯乙烯及其他揮發(fā)性有機(jī)物的測(cè)定，包括水源水、出廠水和末梢水。
核心檢測(cè)方法	頂空氣相色譜法（HS-GC），采用毛細(xì)管色譜柱分離，ECD檢測(cè)器或MS檢測(cè)器定量。
檢出限與定量限	檢出限為0.1 μg/L，定量限為0.3 μg/L（依據(jù)儀器靈敏度調(diào)整）。
質(zhì)控樣品要求	每批次需包含空白對(duì)照、平行樣及加標(biāo)回收樣，加標(biāo)量應(yīng)為待測(cè)物濃度的0.5-2倍，回收率范圍85%-115%。
關(guān)鍵實(shí)驗(yàn)步驟	1. 樣品采集后需冷藏避光保存并在7日內(nèi)分析； 2. 頂空平衡溫度60℃±1℃，平衡時(shí)間30 min； 3. 色譜柱程序升溫，初始溫度40℃保持5 min，以10℃/min升至200℃。
特別說(shuō)明	樣品中若存在四氯化碳等干擾物需通過(guò)色譜柱選擇或前處理消除，結(jié)果報(bào)告需注明是否扣除本底干擾。

標(biāo)準(zhǔn)名稱(chēng)及標(biāo)準(zhǔn)號(hào)	HJ 639-2012《水質(zhì) 揮發(fā)性有機(jī)物的測(cè)定吹掃捕集/氣相色譜-質(zhì)譜法》
適用范圍	地表水、地下水、工業(yè)廢水和生活污水中三氯乙烯等54種揮發(fā)性有機(jī)物的檢測(cè)。
核心檢測(cè)方法	吹掃捕集前處理結(jié)合GC-MS分析，內(nèi)標(biāo)法定量，使用DB-5MS色譜柱（30 m×0.25 mm×1.4 μm）。
檢出限與定量限	三氯乙烯方法檢出限為0.02 μg/L，定量下限為0.08 μg/L。
質(zhì)控樣品要求	每10個(gè)樣品需插入1個(gè)實(shí)驗(yàn)室空白，平行樣相對(duì)偏差應(yīng)≤20%，內(nèi)標(biāo)物回收率60%-130%。
關(guān)鍵實(shí)驗(yàn)步驟	1. 樣品瓶需無(wú)頂空并密封，保存于4℃且48小時(shí)內(nèi)分析； 2. 吹掃時(shí)間11 min，捕集阱溫度40℃； 3. 質(zhì)譜掃描模式為全掃描（m/z 35-270）。
特別說(shuō)明	高濃度樣品需稀釋后分析，若存在顆粒物需經(jīng)0.45 μm濾膜過(guò)濾。

以上信息僅供參考，請(qǐng)以相應(yīng)標(biāo)準(zhǔn)的原文為準(zhǔn)！