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All Journal Molluca Journal of Chemistry Education (MJoCE) Jurnal Laut Pulau
Jusuph J Wattimury
Universitas Pattimura
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education

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ISOLASI DAN KARAKTERISASI ASAM HUMAT DARI HUMUS TANAH ASAL PULAU AMBON DAN PULAU SERAM, MALUKU Yusthinus T Male; Pieter J Kunu; Claudia F Talaud; Jusuph J Wattimury
Molluca Journal of Chemistry Education (MJoCE) Vol 12 No 1 (2022): MJoCE
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol12iss1pp53-61

Abstract

Asam humat adalah salah satu senyawa yang terkandung dalam senyawa humat, yang merupakan hasil dekomposisi bahan organik, terutama bahan nabati yang terdapat dalam batubara muda, gambut, kompos atau humus. Salah satu karakteristik yang paling khusus dari senyawa humat ialah kemampuannya untuk berinteraksi dengan ion logam, oksida, mineral, dan senyawa organik, termasuk pencemar beracun, dengan membentuk asosiasi, baik yang larut dalam air maupun yang tidak larut dalam air. Telah dilakukan isolasi dan karakterisasi asam humat serta penentuan sifat fisik dan kimia tanah hutan asal Desa Waai dan Desa Airlouw, Pulau Ambon serta Desa Kairatu, Pulau Seram. Isolasi asam humat dilakukan menggunakan metode ekstraksi alkali. Hasil penelitian menunjukkan bahwa asam humat hasil isolasi dari ketiga lokasi mengandung gugus fungsi yang sama, yaitu asam karboksilat dan hidroksil (–OH) fenolat. Kadar asam humat tertinggi terdapat pada Desa Kairatu, yaitu 42,05%.
VARIABILITAS MUSIMAN SUHU PERMUKAAN LAUT DAN ANGIN DI LAUT ARAFURA YOPI RIUPASSA; JUSUPH J WATTIMURY
Jurnal Laut Pulau: Hasil Penelitian Kelautan Vol 1 No 2 (2022): Jurnal Laut Pulau
Publisher : Prodi Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jlpvol1iss2pp71-84

Abstract

Research on sea surface temperature (SST) and wind in the Arafura Sea is very important to answer various processes and phenomena that occur in the water column, for example upwelling and downwelling phenomena, the influence of monsoon winds, ENSO and LaNina phenomena, mixing of water masses, forecasting fishing areas, determination of marine cultivation areas, and so on. This study aims to examine the spatial distribution and variability of sea surface temperature (SST) and wind and to examine the correlation of SST with wind speed and direction in the Arafura Sea. SST data is obtained from the AQUA MODIS satellite which is downloaded on the website http://oceancolor.gsfc.nasa.gov. Wind data obtained from the site: ftp://ftp.ifremer.fr/ifremer/cersat. The results of the analysis show that the SST in the Arafura Sea varies seasonally with a range of 23–34oC and a variation of 3.01-4.60%. The wind speed ranges from 0.02-10 m/s with a variation of 40.07-47.76%. There is a strong correlation between SST and wind speed and direction based on latitude and longitude. The correlation between wind speed and SST ranges from -0.01 to -0.87, while the correlation between wind direction and SST ranges from 0.52 and -0.71. In certain waters there is a positive linear correlation of SST with wind direction of 0.18-0.78
Co-Authors Claudia F Talaud Pieter J. Kunu YOPI RIUPASSA Yusthinus T. Male