浙江化工
浙江化工
절강화공
Zhejiang Chemical Industry
2015年
9期
47-50
,共4页
铬天青S%铝离子%干灰化法%分光光度法
鉻天青S%鋁離子%榦灰化法%分光光度法
락천청S%려리자%간회화법%분광광도법
chrome azurol S%aluminum ion%dry ashing method%spectrophotometric method
采用铬天青S法测定红薯粉条中铝的含量，从溶液酸背景、显色时间等方面研究了实验的最佳条件。结果表明，酸背景不影响样品溶液中铝含量测定；显色溶液的吸光度随时间的延长而增大，当反应时间达到2 h时，吸光度值达到最大，2 h后随着时间延长，吸光度有减小趋势；回归方程A=0.0516+0.132m，R=0.99875。抽查市场上销售的五份粉条样品铝含量测定结果中，两份样品铝含量超标。实际样品测定的回收率为91.97%~93.22%。该方法线性相关性较好，方便快捷，准确性高，适合实际样品的大批量分析。
採用鉻天青S法測定紅藷粉條中鋁的含量，從溶液痠揹景、顯色時間等方麵研究瞭實驗的最佳條件。結果錶明，痠揹景不影響樣品溶液中鋁含量測定；顯色溶液的吸光度隨時間的延長而增大，噹反應時間達到2 h時，吸光度值達到最大，2 h後隨著時間延長，吸光度有減小趨勢；迴歸方程A=0.0516+0.132m，R=0.99875。抽查市場上銷售的五份粉條樣品鋁含量測定結果中，兩份樣品鋁含量超標。實際樣品測定的迴收率為91.97%~93.22%。該方法線性相關性較好，方便快捷，準確性高，適閤實際樣品的大批量分析。
채용락천청S법측정홍서분조중려적함량，종용액산배경、현색시간등방면연구료실험적최가조건。결과표명，산배경불영향양품용액중려함량측정；현색용액적흡광도수시간적연장이증대，당반응시간체도2 h시，흡광도치체도최대，2 h후수착시간연장，흡광도유감소추세；회귀방정A=0.0516+0.132m，R=0.99875。추사시장상소수적오빈분조양품려함량측정결과중，량빈양품려함량초표。실제양품측정적회수솔위91.97%~93.22%。해방법선성상관성교호，방편쾌첩，준학성고，괄합실제양품적대비량분석。
This article focuses on the determination of aluminium in sweet potato vermicelli by chrome azurol S method,and Study on the optimal experimental conditions from chromogenic time,acid background. The results show that acid background does not affect the determination of aluminum content in the sample solution;The absorbance of the colored solution increased with the time,when the reaction time was 2 h,the value reached the highest,with the time prolonged,the absorbance decrease. the regression equation was A=0.0516+0.1323m,R=0.99875. Determination of aluminum content of five vermicelli sample sales spot checks on the market results,two samples of aluminium content exceed the standard.The actual sample recovery rate was 91.97%~93.22%.This method is a good linear correlation,convenient,accurate,and suitable for mass sample analysis.
