中国调味品
中國調味品
중국조미품
CHINESE CONDIMENT
2014年
2期
97-99,105
,共4页
催化光度法%铬天青S%亚硝酸盐%溴酸钾
催化光度法%鉻天青S%亞硝痠鹽%溴痠鉀
최화광도법%락천청S%아초산염%추산갑
catalytic spectrophotometry%chromazurol S%nitrite%potassium bromate
在H2 SO4介质中，亚硝酸盐对KBrO3氧化铬天青S 褪色反应有催化作用，基于此建立了催化光度法测定亚硝酸盐的新方法。讨论了 H2 SO4用量、铬天青S 用量、KBrO3用量、加热温度及反应时间的影响，确立了最佳反应条件。在选择的条件下，该方法的线性范围为0．04～1．35 mg/L，检出限为6．6×10-3 mg/L。该方法用于香肠中亚硝酸盐的测定，结果满意。
在H2 SO4介質中，亞硝痠鹽對KBrO3氧化鉻天青S 褪色反應有催化作用，基于此建立瞭催化光度法測定亞硝痠鹽的新方法。討論瞭 H2 SO4用量、鉻天青S 用量、KBrO3用量、加熱溫度及反應時間的影響，確立瞭最佳反應條件。在選擇的條件下，該方法的線性範圍為0．04～1．35 mg/L，檢齣限為6．6×10-3 mg/L。該方法用于香腸中亞硝痠鹽的測定，結果滿意。
재H2 SO4개질중，아초산염대KBrO3양화락천청S 퇴색반응유최화작용，기우차건립료최화광도법측정아초산염적신방법。토론료 H2 SO4용량、락천청S 용량、KBrO3용량、가열온도급반응시간적영향，학립료최가반응조건。재선택적조건하，해방법적선성범위위0．04～1．35 mg/L，검출한위6．6×10-3 mg/L。해방법용우향장중아초산염적측정，결과만의。
A new catalytic spectrophotometry for the determination of nitrite has been developed based on the catalytic effect of nitrite on the fading oxidation reaction between potassium bromate and chromazurol S in H2 SO4 medium.The influences of amount of H2 SO4 ,chromazurol S and KBrO3 , heating temperature and reaction time are discussed and the optimum conditions are established.Un-der the selected conditions,the linear range of determination is 0.04~1.35 mg/L and the detection limit is 6.6×10-3 mg/L.The method has been applied to determine nitrite in sausage with satisfactory results.
