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正丁酸

BW901070

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107-92-6

0.5mL

秦境

99.5%

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正丁酸介绍：

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	Butyric Acid
Product Code	BW901070
Lot Number	23061543
CAS No.	107-92-6
Mol. Formula	C₄H₈O₂
Mol. Weight	88.11
Certified on	13 Jun 2023
Expiry Date	12 Jun 2025
Storage Temp	20°C ± 4°C
Specification	0.5mL

CERTIFIED

Purity

CERTIFIED

Expanded Uncertainty (U)

Approved by

99.5%

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 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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国家标准：《室内空气质量标准》

标准名称及标准号	GB/T 18883-2002《室内空气质量标准》
适用范围	适用于室内空气中挥发性有机化合物（VOCs）的检测，包括正丁酸等有机物。
核心检测方法	气相色谱法（GC）或气相色谱-质谱联用法（GC-MS），通过吸附管采样后热解析分析。
检出限与定量限	检出限为0.01 mg/m³，定量限为0.03 mg/m³。
质控样品要求	需包含空白样、平行样及加标回收样，回收率应控制在80%-120%。
关键实验步骤	1. 样品采集：使用Tenax吸附管以恒定流速采样； 2. 热解析后进样分析； 3. 通过保留时间和质谱特征峰定性定量。
特别说明	需注意采样时间与流量控制，避免吸附管过载。

国家标准：《大气污染物综合排放标准》

标准名称及标准号	GB 16297-1996《大气污染物综合排放标准》
适用范围	适用于工业废气中正丁酸等有机污染物的排放限值测定。
核心检测方法	气相色谱法（GC），采用溶液吸收或吸附管采样。
检出限与定量限	检出限为0.05 mg/m³，定量限为0.15 mg/m³。
质控样品要求	每批次至少分析一个全程序空白样，相对偏差应小于20%。
关键实验步骤	1. 废气采样时需等速追踪； 2. 样品经溶剂洗脱后浓缩； 3. 色谱分离后以FID检测器定量。
特别说明	采样时需避开高湿度环境，防止吸附剂失效。

以上信息仅供参考，请以相应标准的原文为准！