HIDROGEOKIMIA AIRTANAH TIDAK TERTEKAN DI PESISIR BARAT KABUPATEN SERANG DAN PANDEGLANG, PROVINSI BANTEN

Sudaryanto Martosuparno, Wilda Naily, Rizka Maria

Abstract


Proses hidrogeokimia terjadi karena interaksi antara airtanah dengan air laut. Proses tersebut akan mempengaruhi komposisi kimia di lingkungan pesisir. Untuk mengetahui seberapa jauh interaksi tersebut telah terjadi, dilakukan analisis tipe air berdasarkan jumlah anion dan kation yang paling dominan, dan analisis nisbah ion-ion utama. Pengambilan conto dilakukan di 38 lokasi conto air di pesisir barat Kabupaten Serang dan Pandeglang. Hasil penelitian menunjukkan tipe air didominasi oleh Ca(HCO3)2 55,26%, NaHCO3 39,47%, Ca(SO4)2 2,63% and NaMix 2,63%. Sementara hasil analisis nisbah ion utama Na+/Cl-, Ca2+/Mg2+, dan Ca2+/SO42- mengindikasikan bahwa telah terjadi pencemaran air laut di beberapa dataran alluvial pesisir Pandeglang. Pada sebagian besar pesisir barat Serang dan Pandeglang sedang terjadi proses pencemaran atau intrusi air laut.

Occurrence of hydrogeochemical process is due to the interaction between groundwater and sea water. The process will affect the chemical composition in the coastal environment. To find out how far the interaction has taken place, the water type was analysed based on the amount of most dominant anion and cation, and also the major ions ratios. The samplings were conducted in 38 locations on the west coast of Serang and Pandeglang Regencies. Results showed that the water type was dominated by Ca(HCO3)2 55,26%, NaHCO3 39,47%, Ca(SO4)2 2,63% and NaMix 2,63%. While the results of major ion analysis of Na+/Cl-, Ca2+/Mg2+, and Ca2+/SO42- indicated that there has been the sea water pollution in some coastal alluvial plains of Pandeglang. In addition, the process of pollution or sea water intrusion has been occurring on most of the west coast of Serang and Pandeglang.


Keywords


hidrogeokimia, Serang, Pandeglang, tipe air, nisbah ion.

References


Abo-El-Fadl, M. M., 2013. Possibilities of Groundwater Pollution in Some Areas, East of Nile Delta, Egypt. International Journal of Environment 1(1), 1-21. ISSN: 2077-4508

Anthoni, J. F., 2006. The chemical composition of seawater. http://www.seafriends.org.nz/ oceano/seawater.htm (diakses Maret 2017).

Batu, U. L. M., dan Poejoprayitno, S., 2012. Quarternary geological phenomena in Labuhan Area, Pandeglang Regency, Banten Province. Indonesian Journal of Geology (4), 211-226. DOI: 10.17014/ijog.v7i4.148

Effendi, H., 2003. Telaah Kualitas Air. Penerbit Kanisius. Yogyakarta.

Eleonora, C., Eduardo, K., Josep, M., 2009. Hydrochemical and isotope evidence of groundwater salinization processes on the coastal plain of Samborombon Bay, Argentina. Journal of Hydrology 365, 335 – 345. DOI:10.1016/j.jhhydrol.2008.11.041.

Eleonora, C., Eduardo, K., 2012. Hydrochemical characterization of the water resources in the coastal environment of the outer Rio de la Plata Estuary, Argentina. Journal of South American Earth Sciences 37, 113-121. DOI:10.1016/j.jsames.2012.02.009.

Effendi, A. C., 1974. Peta Geologi Lembar Bogor Skala 1:100.000. Pusat Penelitian dan Pengembangan Geologi, Bandung.

Hem, J. D., 1989. Study and Interpretation of the Chemical Characteristic of Natural Water, 3rd ed, US. Geological Survey, Water Supply Paper 2254, 125 pp.

Irham, M., Achmad, R., dan Sugeng Widodo., 2006. Pemetaan sebaran airtanah asin pada aquifer dalam di wilayah Semarang Bawah. Berkala Fisika 9 (3), 137 - 143.

Li, W., Wang, M., Liu, L., Yan, Y., 2015. Assesment of Long-Term Evolution of Groundwater Hydrochemical Characteristics Using Multiple Approaches: A Case Study in Cangzhou, Northern China. Journal Water. 7, 1109- 1128. DOI: 10.3390/w7031109.

Lyles, J. R., 2000. Is seawater intrusion affecting groundwater on Lopez Island, Washington. U.S. Geological Survey. Sheet Fs-057-00.

Moujabber, M. E., Samra, B. B., Darwish, T., dan Atallah, T., 2006. Comparison of different indicators for groundwater contamination by seawater intrusion on the Lebanese Coast. Water Reosurces Management 20, 161-180. DOI: 10.1007 /s11269-006-7376-4.

Marimuthu, S., Reynolds, D., Le Gal La Salle C., 2005. A Field study of hidraulic, geochemical and stable isotope relationship in a coastal wetland system. Journal of Hydrology 315, 93-116. DOI: 10.1016/j.jhydrol.2005.03.041

Matthess, G., 1982. The Properties of Groundwater. A Wiley Interscience Publication, John Wiley & Sons, New York Chichester Brisbane Toronto Singapore, 239-295.

Notodarmojo, S., 2005. Pencemaran Tanah dan Air Tanah. Penerbit ITB. Bandung.

Peraturan Menteri Kesehatan Republik Indonesia, 2010, Jakarta, Nomor : 492/MENKES/ PER/2010, Tentang Persyaratan Kualitas Air Minum.

Sudaryanto, Delinom, R, M., Suherman, D., Lubis, R. F., 2014. Gangguan Air Laut terhadap Kondisi Air Tanah di Wilayah Semarang, Jawa Tengah. Majalah Geologi Indonesia 29, 101-113.

Stuyfzand, P. J., 1991. A new hydrochemical classification of water type: principles and application to coastal-dunes aquifer system of Netherlands. Dalam: De Breuck (ed), Hydrology of saltwater intrusion. A selection of SWIM Papers 11, 329–357.

Santoso, 1991. Peta Geologi Lembar Anyer, Jawa Barat. Pusat Penelitian dan Pengembangan Geologi. ESDM.

Undang-Undang Republik Indonesia Nomor 27 Tahun 2007 Tentang Pengelolaan Wilayah Pesisir dan Pulau-Pulau Kecil.




DOI: http://dx.doi.org/10.14203/risetgeotam2017.v27.466

Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 RISET Geologi dan Pertambangan

Copyright of Journal RISET Geologi dan  Pertambangan (e-ISSN 2354-6638 p-ISSN 0125-9849). Powered by OJS

  

Indexed by:

   

      

 

Plagiarism checker: