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4-戊基苯酚_14938-35-3,4-戊基苯酚
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4-戊基苯酚

BW901058 {{goodObj.price > 0 ? '¥' + goodObj.price : '咨询'}} ¥{{goodObj.sell_price || 0}} 咨询 14938-35-3 100mg {{goodObj.date}} 秦境 {{item.norm}} 97.1% {{inventory}}
4-戊基苯酚介绍:

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.

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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国家标准:《生活饮用水标准检验方法 有机物指标》
标准名称及标准号GB/T 5750.8-2006
适用范围适用于生活饮用水及其水源水中酚类化合物的测定,包括4-戊基苯酚。
核心检测方法液相色谱-质谱联用法(LC-MS),通过色谱分离、质谱定性定量。
检出限与定量限检出限为0.05 μg/L,定量限为0.2 μg/L。
质控样品要求每批次需包含空白样品、加标回收样品(加标量0.5 μg/L),回收率需在70%-120%。
关键实验步骤水样经固相萃取(C18柱)富集后洗脱,氮吹浓缩至干,流动相复溶后上机检测。
特别说明需避免使用塑料容器保存样品,防止酚类物质吸附损失。
行业标准:HJ 783-2016《土壤和沉积物 有机物的测定 加压流体萃取-液相色谱-质谱法》
标准名称及标准号HJ 783-2016
适用范围适用于土壤和沉积物中酚类化合物(含4-戊基苯酚)的测定。
核心检测方法加压流体萃取(PLE)结合LC-MS/MS分析,优化了复杂基质中的目标物提取效率。
检出限与定量限土壤中检出限为0.5 μg/kg,定量限为2.0 μg/kg。
质控样品要求每20个样品至少插入1个平行样和1个基质加标样,RSD需≤15%。
关键实验步骤样品与硅藻土混合后加压萃取(温度100℃,压力1500 psi),萃取液过Florisil柱净化。
特别说明需对萃取溶剂(丙酮-正己烷)进行预脱活处理以降低背景干扰。
国家标准:GB/T 32477-2016《塑料制品中酚类物质的测定》
标准名称及标准号GB/T 32477-2016
适用范围适用于塑料制品中4-戊基苯酚等酚类添加剂的迁移量检测。
核心检测方法气相色谱-氢火焰离子化检测器(GC-FID),结合加速溶剂萃取技术。
检出限与定量限检出限为1.0 mg/kg,定量限为3.3 mg/kg。
质控样品要求需检测阴性对照样品及添加浓度梯度(1/2定量限、定量限、2倍定量限)的标准样品。
关键实验步骤塑料样品粉碎后经乙酸乙酯超声提取,浓缩后经DB-5毛细管柱分离。
特别说明需验证材料基质效应对检测结果的影响,必要时使用基质匹配标准曲线。

以上信息仅供参考,请以相应标准的原文为准!