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三氯乙酸

BW901096

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76-03-9

100mg

秦境

99.7%

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三氯乙酸介绍：

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.

Product Name	Trichloroacetic acid
Product Code	BW901096
Lot Number	23081516
CAS No.	76-03-9
Mol. Formula	C₂HCl₃O₂
Mol. Weight	163.39
Certified on	4 Aug 2023
Expiry Date	4 Aug 2026
Storage Temp	20°C ± 4°C
Specification	100 mg

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.7%

1.0%

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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本公司销售的所有产品仅供实验科研使用，不用于人体及临床诊断。

1. 标准名称及标准号

国家标准：GB/T 5750.10-2006

标准名称：生活饮用水标准检验方法消毒副产物指标

2. 适用范围

适用于生活饮用水及其水源水中三氯乙酸的检测。检测范围覆盖0.5 μg/L至100 μg/L浓度区间。

3. 核心检测方法

气相色谱法（GC-ECD）。样品经液液萃取或固相萃取富集，色谱柱分离后通过电子捕获检测器定量分析。

4. 检出限与定量限

方法检出限（MDL）：0.1 μg/L；定量限（LOQ）：0.5 μg/L。适用于痕量级副产物分析。

5. 质控样品要求

• 空白样品：每批次检测需包含试剂空白和基质空白
• 平行样：每组样品至少10%平行样，相对偏差≤20%
• 加标回收率：应控制在80%-120%范围内

6. 关键实验步骤

• 样品前处理：pH调节至2-3，加入硫酸钠盐析后萃取
• 色谱条件：DB-5毛细管柱（30 m×0.32 mm×0.25 μm），柱温程序升温（初始60℃保持2 min，以10℃/min升至250℃）
• 检测器温度：300℃，载气流速1.5 mL/min（高纯氮气）

7. 特别说明

• 需严格避光保存样品，防止三氯乙酸光解
• 实验器皿需酸洗处理以避免污染
• 干扰物质（如其他卤代酸）需通过优化色谱条件分离

以上信息仅供参考，请以相应标准的原文为准！