1,2-二氯乙烷_(kāi)單標(biāo)_有機(jī)類(lèi)_標(biāo)準(zhǔn)物質(zhì)_萘析商城

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1,2-二氯乙烷

BW901079

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107-06-2

0.5mL

秦境

99.9%

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1,2-二氯乙烷介紹：

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 external7 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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手機(jī)版：1,2-二氯乙烷

本公司銷(xiāo)售的所有產(chǎn)品僅供實(shí)驗(yàn)科研使用，不用于人體及臨床診斷。

標(biāo)準(zhǔn)名稱及標(biāo)準(zhǔn)號(hào)

標(biāo)準(zhǔn)名稱	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)（GB/T 5750.8-2023）
標(biāo)準(zhǔn)號(hào)	GB/T 5750.8-2023

適用范圍

適用于生活飲用水及其水源水中1,2-二氯乙烷的檢測(cè)，包括水源水、出廠水、末梢水等不同水樣的分析。

核心檢測(cè)方法

采用氣相色譜-質(zhì)譜聯(lián)用法（GC-MS）。水樣經(jīng)吹掃捕集或液液萃取前處理后，通過(guò)色譜柱分離，質(zhì)譜檢測(cè)器定性定量分析。

檢出限與定量限

檢出限	0.10 μg/L
定量限	0.30 μg/L

質(zhì)控樣品要求

每批次樣品需加入空白樣、平行樣和加標(biāo)樣（加標(biāo)濃度為實(shí)際樣品濃度的1-2倍），回收率應(yīng)控制在80%-120%，相對(duì)標(biāo)準(zhǔn)偏差（RSD）≤20%。

關(guān)鍵實(shí)驗(yàn)步驟

1. 水樣預(yù)處理：調(diào)節(jié)pH至中性后，用高純氮?dú)獯祾呷コ蓴_氣體；
2. 捕集與解吸：低溫捕集揮發(fā)性有機(jī)物后快速熱解吸；
3. 色譜條件：DB-624色譜柱，程序升溫（40℃→220℃）；
4. 質(zhì)譜參數(shù)：EI離子源，選擇離子監(jiān)測(cè)模式（m/z 62、64）。

特別說(shuō)明

1. 避免使用含鹵化物的溶劑或耗材，防止交叉污染；
2. 分析過(guò)程中需全程避光保存樣品，防止1,2-二氯乙烷光解；
3. 實(shí)驗(yàn)室環(huán)境溫度應(yīng)控制在20℃±2℃，濕度≤60%。

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