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| 多环芳烃类标准物质使用时效性评价 | |
| 引用本文： | 缪德仁,刘玉龙,张晓然,陈宏坤.多环芳烃类标准物质使用时效性评价[J].岩矿测试,2010,29(2):109-112. |
| 作者姓名： | 缪德仁 刘玉龙 张晓然 陈宏坤 |
| 作者单位： | 1. 中国地质大学(北京)水资源与环境工程北京市重点实验室,北京,100083 2. 中国地质大学(北京)水资源与环境工程北京市重点实验室,北京,100083;中国石油天然气集团公司安全环保技术研究院,北京,100085 3. 中国石油天然气集团公司安全环保技术研究院,北京,100085 |
| 基金项目： | 地质调查工作项目--地下水有机污染物分析技术研究项目资助，水体污染控制与治理科技重大专项--地下水源城市饮用水安全保障共性技术研究与示范项目资助 |
| 摘 要： | 为对半挥发性有机化合物标准物质的正确使用提供指导,选用美国ChemSevice公司生产的PPH-10RPM"甲醇中16种多环芳烃混合标准物质",将其分装于2 mL聚四氟乙烯衬盖棕色螺口样品瓶中于-18℃避光贮存,采用气相色谱-火焰离子化检测器方法测试各个特性量值随贮存时间的变化。结果表明,标准物质各个特性量测量的标准偏差在0.3~4.0μg/mL,最大相对标准偏差为3.92%。在置信度为95%时,2χ-检验表明测试结果的精密度适当,评价的测试方法可行;标准物质各特性量值在(100.0±7.2)μg/mL时,测量的偏差不显著。分装后的标准物质至多可保存80天,具体的保存期限还应结合标准物质所剩的有效期确定。 |
| 关 键 词： | 标准物质 多环芳烃 时效性 |
| 收稿时间： | 2009/12/28 0:00:00 |
| 修稿时间： | 2010/1/28 0:00:00 |
Timeliness Evaluation for the Application of Certified Reference Materials in Analysis of Polycyclic Aromatic Hydrocarbons |
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| MIAO De ren,LIU Yu long,ZHANG Xiao ran and CHEN Hong kun.Timeliness Evaluation for the Application of Certified Reference Materials in Analysis of Polycyclic Aromatic Hydrocarbons[J].Rock and Mineral Analysis,2010,29(2):109-112. | |
| Authors: | MIAO De ren LIU Yu long ZHANG Xiao ran and CHEN Hong kun |
| Institution: | 1.Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences,Beijing 100083,China;2.Research Institute of Safety and Environmental Technology,China National Petroleum,Beijing 100085,China) |
| Abstract: | In order to offer guidance on correctly using certified reference materials (CRMs) of 16 polycyclic aromatic compounds (PAHs) in methanol (named PPH-10RPM) manufactured by ChemService Co. Ltd in application of PAHs analysis, stability of CRMs in opened stocks was tested by gas chromatography with a flame ionization detector (GC/FID). The CRM was transferred into 2 mL brown bottles equipped with Teflon-lined screw-caps, stored with minimal headspace and protected from light at storage time was determined. The results showed that the standard deviations of all the property values ranged from 0.3～4.0 μg/mL and the maximum relative standard deviation was 3.92%. In the 95% confidence level, the chi-squared test (χ~2-test) showed that precision of the measurements was acceptable and indicated the evaluation method was feasible and reliable. In addition, the measurement deviation was not significant when the range of property values of the CRMs were within (100.0±7.2) μg/mL. The experiment data also showed that the preservation period of the CRMs for opened stocks was up to 80 days and the period of validity of the CRMs should be considered. |
| Keywords: | certified reference material (CRM) polycyclic aromatic hydrocarbon (PAH) validity of time |
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