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苯甲醛_100-52-7,苯甲醛
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苯甲醛

BW901016 {{goodObj.price > 0 ? '¥' + goodObj.price : '咨询'}} ¥{{goodObj.sell_price || 0}} 咨询 100-52-7 0.5mL {{goodObj.date}} 秦境 {{item.norm}} 99.5% {{inventory}}
苯甲醛介绍:

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

Benzaldehyde

Product Code

BW901016

Lot Number

23041215

CAS No.

100-52-7

Mol. Formula

C7H6O

Mol. Weight

106.12

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

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 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
GB/T 18883-2002《室内空气质量标准》
适用范围
适用于室内空气中苯系物(包括苯甲醛)的浓度检测,适用于住宅、办公楼、公共场所等密闭环境的空气质量评估。
核心检测方法
采用气相色谱法(GC)或气相色谱-质谱联用法(GC-MS)。样品通过吸附管采集,热脱附后进样分析,通过保留时间及质谱图定性,外标法定量。
检出限与定量限
检出限(LOD)为0.01 mg/m³,定量限(LOQ)为0.03 mg/m³,适用于低浓度苯甲醛的精准检测。
质控样品要求
每批次样品需包含空白样、平行样及加标回收样。加标回收率应控制在80%-120%,平行样相对偏差≤15%。
关键实验步骤
1. 样品采集:使用Tenax-TA吸附管,以0.1 L/min流量采样20 L空气。
2. 热脱附:脱附温度300℃,脱附时间10 min。
3. 仪器分析:色谱柱DB-5,程序升温(初始50℃,保持2 min,升至250℃,速率15℃/min)。
特别说明
需避免采样管受潮或污染;实验中含苯甲醛的废液需按危险废弃物处理;高温热脱附可能影响吸附管寿命,需定期验证脱附效率。

以上信息仅供参考,请以相应标准的原文为准!