园艺与种苗
園藝與種苗
완예여충묘
Rain Fed Crops
2012年
1期
39-41
,共3页
蔬菜%亚硝酸盐%活性炭
蔬菜%亞硝痠鹽%活性炭
소채%아초산염%활성탄
Vegetable%Nitrite%Active carbon
[目的]探讨活性炭脱色法检测蔬菜中亚硝酸盐含量的可行性。[方法]以市售12种蔬菜为试材,参考国标法采用分光光度法,研究活性炭加入时间和加入量对蔬菜中亚硝酸盐含量测定的影响。[结果]在国标法的基础上加入活性炭可有效去除色素干扰,以水浴前加入2.0 g活性炭脱色效果最好。在0～10μg范围内,吸光值与硝酸盐含量呈现良好的线性关系,相关系数达0.999 47,方法的相对标准偏差〈1.0%,回收率为97.9%～102.6%。[结论]该方法能够准确检测蔬菜中亚硝酸盐含量。
[目的]探討活性炭脫色法檢測蔬菜中亞硝痠鹽含量的可行性。[方法]以市售12種蔬菜為試材,參攷國標法採用分光光度法,研究活性炭加入時間和加入量對蔬菜中亞硝痠鹽含量測定的影響。[結果]在國標法的基礎上加入活性炭可有效去除色素榦擾,以水浴前加入2.0 g活性炭脫色效果最好。在0～10μg範圍內,吸光值與硝痠鹽含量呈現良好的線性關繫,相關繫數達0.999 47,方法的相對標準偏差〈1.0%,迴收率為97.9%～102.6%。[結論]該方法能夠準確檢測蔬菜中亞硝痠鹽含量。
[목적]탐토활성탄탈색법검측소채중아초산염함량적가행성。[방법]이시수12충소채위시재,삼고국표법채용분광광도법,연구활성탄가입시간화가입량대소채중아초산염함량측정적영향。[결과]재국표법적기출상가입활성탄가유효거제색소간우,이수욕전가입2.0 g활성탄탈색효과최호。재0～10μg범위내,흡광치여초산염함량정현량호적선성관계,상관계수체0.999 47,방법적상대표준편차〈1.0%,회수솔위97.9%～102.6%。[결론]해방법능구준학검측소채중아초산염함량。
[Objective] The aim was to discuss the feasibility of determination of nitrite content in fresh vegetables with active carbon method.[Method] With twelve market vegetables as tested materials,making reference to national standard,spectrophotometric method was used to study the effects of the addition time and amount of active carbon on determining nitrite content in fresh vegetables.[Result] Adding active carbon could remove pigment interference effectively based on the national standard method and the effect of adding 2.0 g active carbon before water bath was the best.The absorbance value at 538 nm had a good linearity with the nitrate content in the range 0-10 μg with the relationship coefficient 0.999 47,the recovery 97.9%-102.6%,and RSD 1.0%.[Conclusion] This method can be used to determine the nitrate content in fresh vegetables.
