摘要
研究了采用石墨炉-原子吸收光谱法测定稻谷中镉元素时,样品消解液的酸度对其吸光度的影响。试验结果表明,在采用石墨炉-原子吸收光谱法测定稻谷中镉元素时,消解液的酸度与其吸光度成负相关,且酸度与吸光度的拟合度符合方程y=0.060 8x2-0.220 7x+0.2538,相关系数R为0.995,拟合度良好。该研究结果可为检测一线的技术人员提供参考。
The effect of acidity of digestion solution on the absorbance was studied during determination of Cd in rice by GFA-AAS .The results showed that there was a negative correlation between acidity of digestion solution and absorbance ,The fitting degree of the acidity and absorbance was fitted with the equation y=0 .060 8x^2 -0 .220 7x＋ 0 .253 8 ,the correlation coefficient R was 0 .995 and the fitting degree was good .The results could provide reference for the detection of the technicians .
出处
《粮食与饲料工业》
CAS
2015年第6期63-65,共3页
Cereal & Feed Industry
基金
国家公益性(粮食)行业科研专项资金资助项目:"湖南稻米主要卫生污染综合治理技术研究"(项目编号:201313005-3)
湖南省科技支撑计划项目:"湖南省稻米镉污染重点区域排查及稻谷品种(系)镉吸附能力对比研究"(项目编号:2011FJ4159)
