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2-庚酮

BW901017

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110-43-0

0.5mL

秦境

98.0%

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2-庚酮介绍：

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	2-Heptanone
Product Code	BW901017
Lot Number	23041216
CAS No.	110-43-0
Mol. Formula	C₇H₁₄O
Mol. Weight	114.19
Certified on	17 Apr 2023
Expiry Date	16 Apr 2025
Storage Temp	(0~4)°C
Specification	0.5mL

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

98.0%

0.5%

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 external 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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标准名称及标准号

标准名称	《生活饮用水标准检验方法有机物指标》（GB/T 5750.8-2023）
标准号	GB/T 5750.8-2023

适用范围

适用范围	适用于生活饮用水及其水源水中挥发性有机物的检测，包括2-庚酮等酮类化合物的定量分析。

核心检测方法

检测方法	气相色谱-质谱联用法（GC-MS），采用顶空或液液萃取前处理，通过特征离子定性及外标法定量。

检出限与定量限

检出限（LOD）	0.05 μg/L（基于仪器信噪比≥3）
定量限（LOQ）	0.2 μg/L（基于仪器信噪比≥10）

质控样品要求

质控要求	每批样品需包含空白样品、加标回收样品和平行样；加标回收率应控制在80%-120%，相对标准偏差（RSD）≤15%。

关键实验步骤

步骤要点	1. 样品前处理：水样需避光冷藏保存，24小时内完成萃取； 2. 顶空条件：平衡温度60℃，平衡时间30分钟； 3. 色谱条件：DB-5MS色谱柱（30 m×0.25 mm×0.25 μm），程序升温从40℃（保持5分钟）升至250℃（10℃/min）； 4. 质谱扫描模式：全扫描（m/z 50-350）。

特别说明

注意事项	1. 2-庚酮易挥发，前处理过程需严格密封； 2. 避免使用塑料器皿，以防有机物吸附干扰； 3. 标准曲线需覆盖实际样品浓度范围，每半年重新校准。

以上信息仅供参考，请以相应标准的原文为准！