液体闪烁计数法测定生物塑料中生物基含量

英文篇名：Determination of the bio-based content of bio-based plastics by liquid scintillation counting
中文刊名：分析试验室
英文刊名：Chinese Journal of Analysis Laboratory
作者：郭项雨 ; 李丕 ; 李海玉 ; 郭兴洲 ; 白桦 ; 吕庆 ; 张庆
英文作者：GUO Xiang-yu ; LI Pi ; LI Hai-yu ; GUO Xing-zhou ; BAI Hua ; L Qing ; ZHANG Qing ; Chinese Academy of Inspection and Quarantine
中文关键词：生物塑料 ; 生物基含量 ; 液体闪烁计数法
英文关键词：Bio-based plastic ; Bio-based content ; Liquid scintillation counting
出版日期：2014-12-08
机构：中国检验检疫科学研究院;
年：2014
期：11
出版单位：分析试验室

摘要

研究并建立了液体闪烁计数法测量生物塑料中生物基含量。首先将生物塑料样品充分燃烧,通过碳的转移与固定,最终催化合成液态苯。通过液体闪烁计数器对液体苯中的放射性核素14C衰变进行计数,从而计算生物塑料样品中生物基的含量。生物塑料样品加标回收率为98.5%~101%,相对标准偏差为0.2%。方法可用于生物塑料中生物基含量检测。
A liquid scintillation counting method was developed for the determination bio-based content of biobased plastics.Firstly,bio-based plastics sample was fully combustion,and then the carbon was transferred and fixed.Finally,liquid benzene was synthesized by catalytic synthesis reaction.The decays of radionuclide14 c in liquid benzene were counted with liquid scintillation counter and bio-based content of bio-based plastics was measured.The recoveries for bio-based plastics were in the range of 98.5% ~ 101%,with the relative standard deviation of 0.2%.The method of LSC is accurate,reliable and can be used to detect actual bio-based materials.

引文

[1]ASTM D6866-12 Standard Test Methods for Determining the Biobased Content of Solid,Liquid,and Gaseous Samples Using Radiocarbon Analysis
    [2]张雪莲,仇士华,蔡莲珍,等.考古,2007,(8):74
    [3]尹金辉,郑勇刚,刘粤霞.地震地质,2005,27(1):83
    [4]Tachibana Y,Masuda T,Funabashi M,et al.Biomacromolecules,2010,11(10):2760
    [5]Masao K,Kazuhiro T,Fumi N,et al.polymers,2013,(2):423
    [6]Masao K.Radioisotopes,2013,62(12):901
    [7]沈承德,乔玉楼.地球化学,1984,43(4):366
    [8]Glenn A N,Steven L D.Bioresour Technol,2006,97:2084
    [9]周卫键,周明富,杨礼平.地球化学,1995,24(2):146
    [10]梁青生,蔡碧琴.核技术,1990,13(4):233
    [11]郑勇刚,尹金辉,刘粤霞.地震地质,2005,27(4):624