CAJ | 학술논문

采用干灰化法和湿消解法对曲靖市马龙县、罗平县、会泽县、富源县和宣威县产的七彩土豆进行处理,以火焰原子吸收法测定其 Ca、Mg、Cu、Cd 和 Pb 含量.测定结果表明：七彩土豆中含有丰富的微量元素 Ca、Mg 和 Cu,并含有少量的 Cd 和 Pb,且不同县之间的七彩土豆在微量元素的含量上有一定差异.从分析结果看,其相对标准偏差为0.17%~4.6%,加标回收率为89.3%~100.3%.从样品处理结果看,湿法消解比干灰化法的精密度和准确度高,实验时间短.实验结果表明：火焰原子吸收法快速、准确、简便,适用于土豆中微量元素含量的测定.
채용간회화법화습소해법대곡정시마룡현、라평현、회택현、부원현화선위현산적칠채토두진행처리,이화염원자흡수법측정기 Ca、Mg、Cu、Cd 화 Pb 함량.측정결과표명：칠채토두중함유봉부적미량원소 Ca、Mg 화 Cu,병함유소량적 Cd 화 Pb,차불동현지간적칠채토두재미량원소적함량상유일정차이.종분석결과간,기상대표준편차위0.17%~4.6%,가표회수솔위89.3%~100.3%.종양품처리결과간,습법소해비간회화법적정밀도화준학도고,실험시간단.실험결과표명：화염원자흡수법쾌속、준학、간편,괄용우토두중미량원소함량적측정.
Dry ashing and wet digestion processes were used to treat the samples from the five counties of Qujing city:Malong county,Luoping county,Huizhe county,Fuyuan county and Xuanwei county.Flame atomic absorption spectrosco-py was used to determine Ca、Mg、Cu、Cd and Pb in purple potatoes.The determination result showed that the purple pota-toes contained a small amount of Cd and Pb and was rich in Ca,Mg and Cu.The contents of the trace elements varied in the samples from different counties.The relative standard deviations for determination of these elements ranged from 0.1 7% to 4.6% and the recovery rates were from 89.3% to 100.3%.The treatment of samples proved that the wet digestion had greater accuracy and precision and need shorter experiment time than the dry ashing method.The result of the experiment indicated that flame atomic absorption spectroscopy was rapid,accurate,simple and acceptable in determination of trace ele-ments of purple potatoes.