The Accumulation of Heavy Metals in Hydrostemma Motleyi Hook. f. Mabberlay and Hydrilla verticillata Casp

نویسندگان

  • CK. LEE
  • K. S. LOW
  • S. H. TAN
چکیده

Pengambilan logam berat (kuprum, zink, nikel, kadmium dan kromium) oleh Hydrostemma motleyi (Hook.f.) Mabberlay dan htydrilla verticillata Casp. telah dikaji. Umumnya pengambilan logam bertambah bila kepekatan logam bertambah. Faktor pertambahan yang menghubungkan paras logam dalam tubuhan dengan paras logam dalam iarutan ber&urang bila kepekatan logam bertambah. Tindakan antagonistik diperhatikan bila Hydrostemma motleyi dikaji dalam Iarutan campuran yang mengandungi kuprum, zink dan nikel. Bagi Hydrilla verticillata kesan sinergistik diperhatikan pada kepekatan rendah bagi Iarutan campuran, tetapi pada kepekatan yang lebih tinggit kesan ini disongsangkan. Pengambilan logam oleh tumbuhan kelihatan bergantung kepada spesis tumbuhan. Hydrilla verticillata telah menunjukkan kebolehan yang lebih tinggi untuk menahan dan mengambil logam berat daripada Hydrostemma motleyi. Tumbuhan ini mempunyai potensi sebagai satu spesis penunjuk bagi pence mar an logam dalam air.

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تاریخ انتشار 2012