Content of Nitrate in Some Species of Fruit and Vegetable from Wholesale Market of Hongqi in Tianjin(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Content of Nitrate in Some Species of Fruit and Vegetable from Wholesale Market of Hongqi in Tianjin

Author(s):: HUANG Jun-xuan¹; 2; LV Ran²; YANG Jing-hui¹; 2; LI Jian-ke¹; 2; LI Shuang-yue¹; 2; ZHANG Wei-yu¹; 1.China-Japan Collaborative Research Center for the Rural Environment and Resource in Tianjin，Tianjin 300384；
2.Department of Horticulture，Tianjin Agricultural University，Tianjin 300384

Abstract:: The samples of 25 fruit and vegetable were collected from wholesale market of Hongqi in Tianjin in March~April,2012,and the nitrate content of samples were analyzed by salicylic acid method.The results showed that nitrate content of all samples were from 47.89 mg/kg to 2 187.23 mg/kg，in which，mild pollution，moderate pollution,severe pollution and most severe pollution were 52%，20%,24% and 4% respectively in all samples.The nitrate content of samples in turn was leaf vegetables>alliaceous vegetables>rhizome>fruit>legumes>eggplant fruit.Chinese cabbage,potato,carrot,strawberry,orange,pepper,eggplant,cayenne pepper,bean,cowpea,snowpeas and onions were polluted mildly;spinach,banana,mango,apple and pear were polluted moderately;lettuce,coriander,lettuce,white radish,leek and garlic were polluted severely;the pollution of rape was the moust severe in all samples.

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Last Update: 2014-09-01