A Chemical Survey of the Batang Belungkung River and the Gombak River
نویسنده
چکیده
Suatu tinjauan kimia terhadap kualiti air di Sungai Batang Belungkung dan Sungai Gombak telah dijalankan dengan tujuan untuk mengkajikan kadar pencemaran yang disebabkan oleh pembuangan kekotoran dari te mpat-tempat kediaman dan kilang-kilang getah. Kandungan oksigen terlarut (DO), keperluan oksigen dari segi biokimia (BOD), keperluan oksigen dari segi kimia (COD), zat makanan (fosforus dan nitrogen), pepejal dan logam yang jumlahnya kecil (natrium kalsium, kalium, magnesium) dalam air pun ditentukan sepanjang hilir sungai. Didapati sungai Batang Belungkung berkecemaran tinggi dengan mempunyai keadaan anaerobik di hilir sungai. Kawasan yang di ulu Sungai Gombak membawa air yang tidak dicemarkan jika dibandingkan dengan yang di hilir yang mempunyai kecemaran tinggi. Di dalam tempoh sepuluh tahun dari tahun 1968/69 ke tahun 1978/79, didapati kawasan yang di hilir Sungai Gombak ini mempunyai tambahan empatbelas kali ganda di dalam kandungan keperluan oksigennya.
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