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正己烷

BW901023

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110-54-3

1mL

秦境

98.5%

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正己烷介绍：

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	n-Hexane
Product Code	BW901023
Lot Number	23041530
CAS No.	110-54-3
Mol. Formula	C₆H₁₄
Mol. Weight	86.18
Certified on	18 Apr 2023
Expiry Date	17 Apr 2025
Storage Temp	(0~4)°C
Specification	1 mL

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

98.5%

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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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

GBZ/T 160.37-2004
《工作场所空气有毒物质测定烷烃类化合物》

2. 适用范围

本标准适用于工作场所空气中正己烷（CAS:110-54-3）浓度的测定，涵盖采样、前处理及气相色谱分析全流程，包括职业接触限值判定。

3. 核心检测方法

活性炭管采样-溶剂解吸-气相色谱法（FID检测器）。样品经二硫化碳解吸后进样分析，以保留时间定性，峰面积定量。

4. 检出限与定量限

方法检出限（LOD）为0.5 µg/mL（对应空气浓度为0.25 mg/m³），定量限（LOQ）为1.5 µg/mL（对应空气浓度为0.75 mg/m³）。

5. 质控样品要求

每批次需包含空白样品、平行双样和加标回收样，加标回收率应在85%-110%，相对标准偏差（RSD）≤10%。

6. 关键实验步骤

采样: 活性炭管以0.5 L/min流量采集15 L空气样品
解吸: 二硫化碳浸泡解吸30分钟，震荡强化解吸效率
分析: 气相色谱仪进样，色谱柱推荐使用HP-5（30 m×0.32 mm×0.25 µm）

7. 特别说明

实验室需验证本底干扰，避免使用含烃类溶剂的耗材；采样时需避开静电环境，正己烷蒸气密度大于空气，建议在呼吸带高度采样。

以上信息仅供参考，请以相应标准的原文为准！