4-壬基酚（异构体混合物）_混标_有机类_标准物质_萘析商城

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4-壬基酚（异构体混合物）

BW901066

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84852-15-3

250mg

秦境

99.9%

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4-壬基酚（异构体混合物）介绍：

Method of Characterisation

GC/FID

Batch Information

Water Content: <0.1% (by Karl-Fischer-Titration)

Uncertainty

The certified value(s) and uncertainty(ies) aredetermined in accordance with ISO 17034 with an 95% confidence level (k=2).Uncertainty is based on the Total Combined Uncertainty, including uncertaintiesof characterisation, homogeneity and stability testing. Stability values are basedon real evidence opposed to simulation.

The producer certifies that this reference materialmeets the specification stated in this certificate until the expiry date,provided it is stored unopened at the recommended temperature herein. Productwarranties for this reference material are set out in the terms and conditionsof purchase.

Intended Use

This RM is intended for use in a laboratory as acalibration and quality control standard or in method development foranalytical techniques.

Safety

Proper precautions should be observed whilehandling. See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements arecalibrated with weights traceable to the national standards (DKD). Thecalibration of the balances is verified daily internally and annually by anexternal7 accredited calibration service. Chromatographic methods are traceableto the International System of Units (SI).

Homogeneity

Random replicate samples of the final packaged RMhave been analysed to prove homogeneity compliant with ISO 17034.

Storage

The RM should be stored in the original sealedcontainer at the indicated temperature.

Instructions for use

It is recommended to use 1 mg as the minimum samplesize and if less material is used, to increase the certified uncertainty by afactor of two for half sample and four for a quarter of sample. If storageafter opening is necessary, the RM should be tightly closed and kept from lightand moisture. If the RM was in a sealed ampoule, it should be transferred to avial 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指标
标准号	GB/T 5750.8-2023

适用范围

适用于生活饮用水及其水源水中4-壬基酚的检测，涵盖异构体混合物的痕量分析。

核心检测方法

采用气相色谱-质谱联用法（GC-MS）或高效液相色谱法（HPLC）。样品需经固相萃取（SPE）或液液萃取（LLE）富集，仪器分析结合质谱定性与定量。

检出限与定量限

检出限	0.02 μg/L（GC-MS法）
定量限	0.05 μg/L（GC-MS法）

质控样品要求

每批次需包含空白样、平行样和加标回收样。加标浓度应为定量限的1~5倍，回收率需控制在70%~120%之间。

关键实验步骤

1. 样品预处理：调节pH至酸性，使用C18固相萃取柱富集；
2. 洗脱与浓缩：用二氯甲烷洗脱，氮吹浓缩至近干；
3. 仪器分析：GC-MS参数设定为程序升温（初始50℃，保持2分钟，以20℃/min升至280℃），质谱选择离子监测模式（SIM）。

特别说明

1. 实验过程中需严格避光以防止光解；
2. 4-壬基酚异构体分离效果需通过色谱柱选择优化（推荐使用DB-5MS色谱柱）；
3. 样品瓶需为棕色玻璃材质以减少吸附。

以上信息仅供参考，请以相应标准的原文为准！