本文研究了两种检测制革厂的废水中铬离子的方法。第一种方法是先把三价铬离子以氢氧化铬的形式沉淀出来,第二种方法则是先用阳离子交换树脂(Amberlite R IR 120H)对制革厂废水进行预浓缩,然后用电磁感应耦合等离子体-原子发射光谱...本文研究了两种检测制革厂的废水中铬离子的方法。第一种方法是先把三价铬离子以氢氧化铬的形式沉淀出来,第二种方法则是先用阳离子交换树脂(Amberlite R IR 120H)对制革厂废水进行预浓缩,然后用电磁感应耦合等离子体-原子发射光谱仪(ICP-AES)检测被分离出来的溶液中的六价铬离子。为了检验这两种分析方法,先对自制的含两种铬离子的混合溶液进行了测试,然后对两个制革厂取来的样品溶液中的铬离子进行了分析。结果表明这两个制革厂的鞣制湿操作阶段中六价铬离子平均浓度在10.5mg·mL^-1~16.6mg·mL^-1范围之间;最后排出的废水中铬离子浓度稍低,在0.42mg·mL^-1~2.39mg·mL^-1。范围内。离子色谱法证明这两种方法是可行的。展开更多
This paper reported the results of the determination of Ag, A1, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, Rb, Sr and Zn in Common Chanterelles (Cantharellus cibarius) Fr. and surface soil layer (o-io cm...This paper reported the results of the determination of Ag, A1, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, Rb, Sr and Zn in Common Chanterelles (Cantharellus cibarius) Fr. and surface soil layer (o-io cm) underneath the fruiting bodies. Mushrooms and soils were collected from a lowland site in the Hel Peninsula (Baltic Sea coast) and a high mountain site in the Tatra Mountains. The trace elements were determined using validated method and inductively coupled plasma - atomic emission spectroscopy (ICP-AES). Common Chanterelles that emerged at sites poor in mineral nutrients podzols of the Hel Peninsula forests efficiently bioeoncentrated several essential trace elements (K, P, Co, Cu, Mn, Na, Zn), while the abundance of those elements in carpophores was around half less compared to specimens from Zakopane region and which emerged in soils much richer in minerals. Common Chanterelles collected at two spatially distant background areas in Poland were only weakly contaminated with metals such as Ag, Cd, Hg and Pb. The maximum tolerable Cd and Pb contents of certain cultivated mushrooms are regulated in the European Union by law and these hazardous metals in C. cibarius were far below tolerance limits set.展开更多
文摘本文研究了两种检测制革厂的废水中铬离子的方法。第一种方法是先把三价铬离子以氢氧化铬的形式沉淀出来,第二种方法则是先用阳离子交换树脂(Amberlite R IR 120H)对制革厂废水进行预浓缩,然后用电磁感应耦合等离子体-原子发射光谱仪(ICP-AES)检测被分离出来的溶液中的六价铬离子。为了检验这两种分析方法,先对自制的含两种铬离子的混合溶液进行了测试,然后对两个制革厂取来的样品溶液中的铬离子进行了分析。结果表明这两个制革厂的鞣制湿操作阶段中六价铬离子平均浓度在10.5mg·mL^-1~16.6mg·mL^-1范围之间;最后排出的废水中铬离子浓度稍低,在0.42mg·mL^-1~2.39mg·mL^-1。范围内。离子色谱法证明这两种方法是可行的。
基金supported by the Ministry of Science and Higher Education, Poland (Grant No.DS-8130-4-0092-1)in part by Chinese Academy of Science (Grant No 2010T1Z26)
文摘This paper reported the results of the determination of Ag, A1, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, Rb, Sr and Zn in Common Chanterelles (Cantharellus cibarius) Fr. and surface soil layer (o-io cm) underneath the fruiting bodies. Mushrooms and soils were collected from a lowland site in the Hel Peninsula (Baltic Sea coast) and a high mountain site in the Tatra Mountains. The trace elements were determined using validated method and inductively coupled plasma - atomic emission spectroscopy (ICP-AES). Common Chanterelles that emerged at sites poor in mineral nutrients podzols of the Hel Peninsula forests efficiently bioeoncentrated several essential trace elements (K, P, Co, Cu, Mn, Na, Zn), while the abundance of those elements in carpophores was around half less compared to specimens from Zakopane region and which emerged in soils much richer in minerals. Common Chanterelles collected at two spatially distant background areas in Poland were only weakly contaminated with metals such as Ag, Cd, Hg and Pb. The maximum tolerable Cd and Pb contents of certain cultivated mushrooms are regulated in the European Union by law and these hazardous metals in C. cibarius were far below tolerance limits set.