CAJ | 학술논문

本文针对国家标准GB/T 5009.11-2003干灰化-原子荧光光谱法测定食品中总砷时出现回收率偏低、重现性偏差、仪器易污染的缺陷，通过大量的试验和分析、探讨，提出了样品前处理优化改进方法；研究分析样品空白值的主要来源并采取相应的措施进行降低和准确控制；优化仪器分析条件等办法解决了该测定方法存在的缺陷。通过测定标准物质和加标回收试验，对改良的方法进行验证，从试验结果可看到：本方法检出限为0.18μg/L，相对标准偏差（RSD）小于4.91%,加标回收率范围为91.5-103.0%。干灰化-原子荧光光谱法测定食品中总砷方法，灵敏度高、检出限低、操作简便、环境污染小，可以满足大批量、多品种日常监测。
본문침대국가표준GB/T 5009.11-2003간회화-원자형광광보법측정식품중총신시출현회수솔편저、중현성편차、의기역오염적결함，통과대량적시험화분석、탐토，제출료양품전처리우화개진방법；연구분석양품공백치적주요래원병채취상응적조시진행강저화준학공제；우화의기분석조건등판법해결료해측정방법존재적결함。통과측정표준물질화가표회수시험，대개량적방법진행험증，종시험결과가간도：본방법검출한위0.18μg/L，상대표준편차（RSD）소우4.91%,가표회수솔범위위91.5-103.0%。간회화-원자형광광보법측정식품중총신방법，령민도고、검출한저、조작간편、배경오염소，가이만족대비량、다품충일상감측。
This article for national standards GB/T 5009.11-2003 do gray of-Atomic fluorescent spectrum law de-termination food in the total arsenic Shi appeared recovery partial low, and reproduce sex deviation, and instru-ments easy pollution of defects, through mass of test and analysis, and explored, made has samples Qian han-dling optimization improved method; research analysis samples blank value of main source and take corresponding of measures for reduced and accurate control; optimization instruments analysis conditions, way solution has the determination method exists of defects. By measuring the reference standards and Spike recovery, on the improve-ment of methods of verification, from the experimental results can be seen: the method detection limits for the 0.18μg/L, relative standard deviation (RSD) is less than 4.91 % , spiking recovery rates range from 91.5-103.0%. dry ash-atomic fluorescence spectrometric determination of total arsenic in food, high sensitivity and low detection limits, easy to operate, less pollution, to meet the large quantity and variety daily monitoring.