ANALISIS TINGKAT PENCEMARAN POSFAT DAN NITRAT DI BEBERAPA SUB DAS KALIMANTAN SELATAN

Siti Hasnah, Mijani Rahman, Abdur Rahman

Abstract


Penelitian ini bertujuan untuk mengetahui  pencemaran kadar Nitrat (N) dan Posfat (P) di Beberapa Sub DAS Kalimantan Selatan berdasarkan metode Indek Pencemaran (Kep_MENLH/115/2003).

Dari hasil penelitian diperoleh hubungan (r) antara variabel Baku Mutu (Y1) dan variabel (X) atau Posfat dan Nitrat  = 0,792. Perhitungan terhadap nilai R2-determinant diperoleh hasil sebesar 0,672. Hal ini berarti 67,2 % faktor Baku Mutu Air (Y) dipengaruhi oleh faktor Posfat dan Nitrat, sisanya sebesar 33,8 % dipengaruhi oleh variabel lain yang tidak dapat dijelaskan dalam persamaan. 

Rasio antara parameter P dan N (P = 0,577 : N = 0,062 = 9,30),  berada diantara 7 sampai 12.  Berarti variabel Posfat dan Nitrat bukanlah sebagai faktor pembatas terjadinya pencemaran. Hasil Perhitungan indeks pencemaran terhadap pareameter P dan N diperoleh nilai sebesar 9,30, masih memenuhi baku mutu untuk beberapa Sub-sub DAS (Riam Kanan, Tabanio, Sungai Naiyan, Sungai Satui, Sungai Kintap, Sebamban dan Sungai Kusan).

This study aims to determine the pollution levels of nitrate (N) and phosphate (P) in South Kalimantan Several subzone based method Pollution Index (Kep_MENLH / 115/2003).

The results were obtained relationship (r) between the variables Quality Standards (Y1) and variable (X) or Phosphate and Nitrate = 0.792. Calculation of the value of R2-determinant obtained yield was 0.672. This means that 67.2% factor Water Quality Standard (Y) is influenced by factors Phosphate and Nitrate, while the remaining 33.8% is influenced by other variables that can not be explained in the equation. The ratio between the parameter P and N (P = 0.577 N = 0,062 = 9.30), is between 7 to 12. It means that the variable Phosphate and Nitrate is not a limiting factor for contamination. Calculation results of the pollution index pareameter P and N obtained a value of 9.30, still meet quality standards for some sub-sub-basins (Riam Kanan, Tabanio, Naiyan River, River Satui, Kintap River, and the River Sebamban Kusan).


Keywords


Tingkat Pencemaran, Posfat, Nitrat, Sub DAS,Pollution Levels, Phosphate, Nitrate, Watershed

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DOI: http://dx.doi.org/10.20527/fs.v4i7.1129

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Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. ISSN : 1693-3710 (print version), E-ISSN : 2541-1187 (online version)

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