【摘要】 对莴苣、木耳菜、黄瓜、辣椒、豇豆、四季豆等６种夏季蔬菜汞吸收能力研究发现，在田间自然状态下，６种蔬菜植株总汞平均浓度为０．００３４７～０．００６３７ｍｇ／ｋｇ，其中辣椒总汞平均浓度最高，黄瓜最低；其总汞在各部位的分布量以可食部分为主，其中，汞在叶菜类可食部分分布＞６８％、豆菜类及果菜类＞５９％。盆栽试验表明，３种幼苗中辣椒吸汞能力最强，莴苣最弱，但它在气汞浓度为５７．６±１４．７ｎｇ／ｍ３下，叶片含汞浓度０．０１２７ｍｇ／ｋｇ，超过食品卫生标准（ＧＢ２８６７－８７，０．０１ｍｇ／ｋｇＦＷ）；当土壤和大气的汞浓度同时很高时，蔬菜植株含汞浓度大幅增加，这必将会进入食物链，并危害生态系统。更多还原

【Abstract】 Six kinds of summer vegetable including lettuce,red line spinach,cucumber,pepper,cow pea,green bean were studied in this paper.The results indicated that the average Hg content of the six kinds of vegetable were 0.00437～0.00637mg/kg in natural conditions,of which pepper was the highest and cucumber was the lowest.The accumulated value of Hg in the edible parts was the highest in different parts of the six kinds of vegetable,of which Hg accumulated value was more than 68% in leaf vegetables and 59% in bean or fruit vegetables,respectively.The results of pot experiment showed that the Hg content in green pepper was the highest and that in the lettuce was the lowest among three seedlings of vegetable.While the lettuce could accumulate 0.0127mg Hg/kg in its leaves,it had been excess the Food Health Standard Value (GB2867 87,0.01mg/kg FW) under a relative high air Hg conditions (57.6ng Hg/m 3) in pot experiment.The Hg content of the vegetable highly increased with a high air Hg and high soil Hg conditions.It implied that more Hg would transferred into food chain and harm the ecosystem.更多还原