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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 : '咨詢'}} ¥{{goodObj.sell_price || 0}} 咨詢 79-01-6 0.5mL {{goodObj.date}} 秦境 {{item.norm}} 99.7% {{inventory}}
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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國家標(biāo)準(zhǔn):《水質(zhì) 三氯乙烯的測定 頂空氣相色譜法》
適用范圍 適用于飲用水、地表水、地下水和工業(yè)廢水中三氯乙烯的測定。
核心檢測方法 頂空進(jìn)樣-氣相色譜法(HS-GC),使用氫火焰離子化檢測器(FID)。
檢出限與定量限 方法檢出限為0.005 mg/L,定量下限為0.02 mg/L。
質(zhì)控樣品要求 每批次需包含空白樣品、平行樣和加標(biāo)回收樣,回收率應(yīng)控制在80%-120%。
關(guān)鍵實(shí)驗(yàn)步驟 樣品頂空平衡溫度60℃,平衡時(shí)間30分鐘;色譜柱為毛細(xì)管柱(如DB-5),柱溫程序升溫。
特別說明 需避免樣品保存時(shí)間過長,建議24小時(shí)內(nèi)完成分析;干擾物需通過色譜分離排除。
行業(yè)標(biāo)準(zhǔn):《水質(zhì) 揮發(fā)性有機(jī)物的測定 吹掃捕集/氣相色譜-質(zhì)譜法》
適用范圍 適用于地下水和廢水中三氯乙烯及其他揮發(fā)性有機(jī)物(VOCs)的測定。
核心檢測方法 吹掃捕集-氣相色譜/質(zhì)譜聯(lián)用法(GC-MS),內(nèi)標(biāo)法定量。
檢出限與定量限 三氯乙烯方法檢出限為0.03 μg/L,定量限為0.1 μg/L。
質(zhì)控樣品要求 需添加替代物(如氟苯)監(jiān)控回收率,每批樣品至少1個(gè)實(shí)驗(yàn)室空白。
關(guān)鍵實(shí)驗(yàn)步驟 吹掃時(shí)間11分鐘,解吸溫度180℃;質(zhì)譜采用全掃描模式(SCAN)定性。
特別說明 樣品需冷藏保存,7天內(nèi)完成分析;高濃度樣品需稀釋以避免污染捕集管。
國家標(biāo)準(zhǔn):《生活飲用水標(biāo)準(zhǔn)檢驗(yàn)方法 有機(jī)物指標(biāo)》
適用范圍 生活飲用水中三氯乙烯及其他有機(jī)污染物的檢測。
核心檢測方法 液液萃取-氣相色譜法(LLE-GC),電子捕獲檢測器(ECD)。
檢出限與定量限 三氯乙烯檢出限為0.1 μg/L,定量限為0.3 μg/L。
質(zhì)控要求 每10個(gè)樣品需加測1個(gè)平行樣,相對(duì)偏差≤20%。
關(guān)鍵實(shí)驗(yàn)步驟 樣品用正己烷萃取,濃縮后進(jìn)樣;色譜柱推薦使用HP-5(30 m×0.32 mm×0.25 μm)。
特別說明 避免使用含氯溶劑清洗玻璃器皿,防止交叉污染。

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

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