用于X射线荧光光谱法测定聚丙烯材料中有害元素的标准样品的制备  

Preparation of Standard Samples for Use in XRFS Determination of Harmful Elements in Polypropylene Materials

作　　者：王斌[1] 方成 兰丽丽[3] 钟康华 黄雪琳[1] 黄伟[1] 蒋小良[4] 马强[5] 刘崇华[3] 宋武元[3] WANG Bin1 , FANG Cheng2 , LAN Lili3 , ZHONG Kanghua1 , HUANG Xuelin1 , HUANG Wei1 , JIANG Xiaoliang4 , MA Qiang5 , LIU Chonghua3 , SONG Wuyuan3(1. Dongguan Entry-Exit Inspection and Quarantine, Dongguan 523072, China; 2. South China Technical Service Co., Ltd., Dongguan 523000, China ; 3. Guangdong Entry-Exit Inspection and Quarantine, Guangzhou 510623, China ; 4. Jiangmen Entry-Exit Inspection and Quarantine, Jiangmen 529000, China; 5. Chinese Academy of Inspection and Quarantine, Beij ing 100176, China)

机构地区：[1]东莞出入境检验检疫局,东莞523072 [2]广东华科检测技术服务有限公司,东莞523000 [3]广东出入境检验检疫局,广州510623 [4]江门出入境检验检疫局,江门529000 [5]中国检验检疫科学研究院,北京100176

出　　处：《理化检验（化学分册）》2018年第11期1292-1298,共7页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家标准样品研复制计划项目(S2017055);广东检验检疫局科技计划项目(2017GDK19)

摘　　要：制备了一套适用于X射线荧光光谱法测定聚丙烯(PP)材料中5种有害元素(铅、镉、铬、汞和溴)的标准样品。首先,制备聚丙烯材料目标元素高含量母粒,然后通过逐级稀释的方法制备目标元素含量梯度的样品原料,最后制得符合X射线荧光光谱分析使用要求的标准样品。采用电感耦合等离子体原子发射光谱法和离子色谱法测定所制得标准样品中各元素的含量。所制备的用于X射线荧光光谱分析的PP标准样品通过F检验和t检验,得到统计量F<F_(0.05(14,135)),统计量t<t_(0.05(12)),说明此标准样品均匀性、稳定性良好。A set of standard samples for use in XRFS determination of 5 harmful elements （i.e., Pb, Cd, Cr, Hg and Br） in polypropylene （PP） materials was prepared. At first, PP granules （or ＂mother granules＂） containing estimated high contents of the 5 target elements were prepared. Then the mother granules were mixed by stepwise dilution to prepare candidate PP samples containing the concentration levels. Finally, the standard samples which were suitable to be used in XRFS analysis, were perpared. ICP-AES and IC were used for determination of each element in the prepared standard samples. Homogeneity and stability of the prepared standard samples were determined by the F-test and t-test, giving values of F and t were all less than the critical values of F0.05（14,135） and t0.05（12） , showing that the stability and homogeneity of the standard samples were satisfactory.

关 键 词：X射线荧光光谱法 聚丙烯 标准样品 有害元素 

分 类 号：O657.34[理学—分析化学]