摘要
研究了测定痕量铜的新催化光度法。方法在pH为11.4的条件下,铜(Ⅱ)催化双氧水氧化百里酚兰的反应。测定铜的线性范围为0～180ng/25ml,检出限为0.31ng/ml。用于食品的测定,结果令人满意。
A new catalytic spectrophotometric method was developed for determination of trace Cu(Ⅱ), based on the catalyticeffect of Cu (Ⅱ) on the reaction of Thymol Blue buffer solution buffer solution with H2O2 in pH=11.4, the detection limit was0.31ng/ml and the linear range 0~180ng/25ml. The method has also been applied to the determination of trace amounts of manganesein the foodstuffs with satisfactory results.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2005年第7期189-191,共3页
Food Science
关键词
铜
催化光度法
食品
cuprum
catalytic spectrotometric method
foodstuff
