【摘 要】
:
Field studies were conducted to investigate arsenic (As),copper (Cu) and zinc (Zn) contamination in agricultural soils and wheat crops at two areas in the proximity of a coal washery (Area A) and a co
【机 构】
:
College of Life Sciences,Nanjing Agricultural University,Nanjing,P.R.China,210095
论文部分内容阅读
Field studies were conducted to investigate arsenic (As),copper (Cu) and zinc (Zn) contamination in agricultural soils and wheat crops at two areas in the proximity of a coal washery (Area A) and a coal mine (Area B) in Huaibei,China.Estimates of the potential health risk of As,Cu,and Zn exposure to the local inhabitants through consumption of wheat grains was also undertaken.The results showed that significantly higher (p < 0.05) concentrations of As,Cu,and Zn were found in soils collected from Area A than in those collected from Area B.Concentrations of As,Cu and Zn in wheat seedlings and grains collected from Area A were significantly higher than those in Area B,with the exceptions of As in wheat grains and Zn in seedlings.
其他文献
Biodiesel from microalgal oils might be the most promising alternative to petroleum diesel used in compression-ignition engines worldwide owing to its potential of sustainability and high productivity
水稻生殖生长期是夺取高产的主要阶段,水稻白条纹自发突变体6001是由野生型6028的自发突变而来的,本实验主要研究生殖生长期水稻白条纹自发突变体6001和野生型6028剑叶的光合能力、荧光特性及叶绿体超微结构的差异,为以后在分子水平上研究提供重要的理论依据。
以菊花脑(Chrysanthemum nankingense)为实验材料,叶绿素提取量为指标,采用单因素试验(提取溶剂、浸提时间、液料比、温度)和三因素三水平正交试验法优化了菊花脑叶绿素的提取工艺条件.结果表明,影响叶绿素提取的主次因素为浸提时间>温度>液料比,并且浸提时间、液料比、温度的影响都达到了极显著水平;叶绿素最佳提取工艺条件为:以丙酮、无水乙醇及水比例为4.5∶4.5∶1的混合溶液作提取
Root gravitropism is affected by many environmental stresses,including salinity,drought,and nutrient deficiency.One significant environmental stress,excess ammonium (NH4+),is well-documented to inhibi
Breeding salinity-tolerant turfgrass became more important for turf irrigation used saline water and turf establishment in saline soil.Hybrid bermudagrass is a kind of widely used turfgrass in warm re
以目前园林绿化中广泛应用的‘青岛结缕草’和马尼拉为对照,对52份中国结缕草属野生种源的长期水分利用效率(WUEL)进行了测定并分析.结果如下:1)各种源的WUEL的变异范围为0.108%~0.384%,变异系数为25.86%.在52份供试种源中,WUEL显著高于马尼拉的有3份种源;WUE显著高于‘青岛结缕草’的有2份种源;WUEL同时显著高于对照的有2份种源.结缕草属植物的WUEL存在极显著的差异
The vacuole in plant cell plays a crucial role in plants tolerance to salinity.Two plant proton pumps,vacuolar H+-ATPase (V-H+-ATPase) and H+-pyrophosphatase (V-H+-PPase),participate in acidifying com