摘要
为了解徐州地区双孢蘑菇子实体重金属污染状况,采集4个主栽区SNGS,QSTY,JWJZ和FXHK覆土和子实体样品各48个,分别测定其重金属Pb,Cd,As和Hg含量并分析污染程度、富集系数和食用安全性。结果表明:QSTY和FXHK覆土中As,Hg和FXHK覆土中Cd含量均高于土壤背景值;仅见QSTY子实体中Hg含量超过国标限量值0.005倍;SNGS和JWJZ子实体为一级产品,FXHK和QSTY子实体分别为二级和三级产品,QSTY和FXHK子实体重金属污染等级已达警戒级;4个主栽区子实体重金属富集能力大小为Hg>Cd>As>Pb,且食用安全性均符合卫生标准。由此可见,该地区双孢蘑菇子实体中这4种重金属含量基本符合无公害食品食用菌安全标准。
To understand pollution state of heavy metal in Agaricus bisporus fruiting body in Xuzhou area, 48 covering soils and 48 fruiting bodies were collected from 4 main plantation areas （ SNGS, QSTY, JWJZ and FXHK）. Then the contents of Pb, Cd, As and Hg were determined and their pollution degrees, accumulation coefficients, edible secur- ity were analyzed. The results showed that the contents of As and Hg in QSTY and FXHK, Cd in FXHK covering soils were higher than their own background value. Only Hg content in QSTY fruiting body was more than 0. 005 times of the define value of national standard. SNGS and JWJZ fruiting bodies all belonged to the first product, whereas FXHK and QSTY fruiting body was the second and third product, respectively. Pollution grade of heavy metals in QSTY and FXHK fruiting bodies had reached warning grade. Accumulation ability of heavy metals in fruiting bodies among 4 main plantation areas from high to low was Hg, Cd, As and Pb, and these fruiting bodies all met hy- gienic standard. Thus it could be seen that the contents of 4 heavy metals in Agaricus bisporus fruiting bodies in Xuzhou area basically met the safety standard of pollution-free food.
出处
《浙江农业学报》
CSCD
北大核心
2013年第1期53-58,共6页
Acta Agriculturae Zhejiangensis
基金
江苏省农业三新工程项目"双孢蘑菇生态均衡生产关键技术研究与示范"[SX(2011)380]
徐州生物工程职业技术学院科研课题"双孢蘑菇-草菇周年轮作栽培模式的研究与示范"(2011B04)
关键词
双孢蘑菇
子实体
重金属
富集系数
污染评价
Agaricus bisporus
fruiting body
heavy metal
accumulation coefficient
pollution evaluation
