Indonesian Journal of Chemical Research最新文献

ANALISIS KADAR BOD (BIOLOGICAL OXYGEN DEMAND) DAN COD (CHEMICAL OXYGEN DEMAND) PADA AIR SUNGAI BATANG MASUMAI KABUPATEN MERANGIN DI UPTD LABORATORIUM DINAS LINGKUNGAN HIDUP KABUPATEN MERANGIN

Indonesian Journal of Chemical Research Pub Date : 2023-02-17 DOI: 10.20885/ijcr.vol7.iss2.art5

A. Ramadhani, Vera Purnama

{"title":"ANALISIS KADAR BOD (BIOLOGICAL OXYGEN DEMAND) DAN COD (CHEMICAL OXYGEN DEMAND) PADA AIR SUNGAI BATANG MASUMAI KABUPATEN MERANGIN DI UPTD LABORATORIUM DINAS LINGKUNGAN HIDUP KABUPATEN MERANGIN","authors":"A. Ramadhani, Vera Purnama","doi":"10.20885/ijcr.vol7.iss2.art5","DOIUrl":"https://doi.org/10.20885/ijcr.vol7.iss2.art5","url":null,"abstract":"Sungai sebagai sumber air merupakan salah satu sumber daya alam yang mempunyai fungsi serbaguna bagi kehidupan dan penghidupan manusia. Air sungai Batang Masumai . Tujuan dilakukan Praktik Kerja Lapangan ini untuk mengetahui kualitas air sungai Batang Masumai dengan menggunakan parameter BOD (Biochemical Oxygen Demand) dan COD (Chemical Oxygen Demand) apakah kadar air sungai tersebut sudah sesuai dengan standar baku mutu pada peraturan pemerintah Republik Indonesia Nomor 22 Tahun 2021. Analisis dilakukan di laboratorium lingkungan Dinas Lingkungan Hidup Kabupaten Merangin. Parameter BOD menggunakan metode titrasi iodometri dengan hasil uji BOD yang telah dilakukan diperoleh nilai 7,2478 mg/L. Sedangkan. parameter COD menggunakan metode reflux tertutup dan instrumen spekstrofotometer Uv-Vis dengan hasil akhir COD yang telah dilakukan diperoleh nilai 42,32 mg/L. hasil uji BOD dan COD berdasarkan baku muku peraturan pemerintah Republik Indonesia Nomor 22 Tahun 2021 tentang penyelenggaraan perlindungan dan pengelolaan lingkungan hidup telah melewati baku mutu dari kelas II pada parameter BOD dan COD yang menandakan ada indikasi air sungai tercemar. \u0000 ","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86986011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CHARACTERIZATION AND CHEMICAL COMPOSITION OF SULFIDE ORES ORIGIN FROM WANGGAMETI VILLAGE, MATAWAI LAPAWU DISTRICT, EAST SUMBA REGENCY 东松巴县马塔外拉帕乌区王格梅蒂村硫化物矿石特征及化学成分

Indonesian Journal of Chemical Research Pub Date : 2023-01-05 DOI: 10.20885/ijcr.vol7.iss2.art3

Lodowik Landi Pote, Anggelinus Nadut

{"title":"CHARACTERIZATION AND CHEMICAL COMPOSITION OF SULFIDE ORES ORIGIN FROM WANGGAMETI VILLAGE, MATAWAI LAPAWU DISTRICT, EAST SUMBA REGENCY","authors":"Lodowik Landi Pote, Anggelinus Nadut","doi":"10.20885/ijcr.vol7.iss2.art3","DOIUrl":"https://doi.org/10.20885/ijcr.vol7.iss2.art3","url":null,"abstract":"Sulphide ore is one of the most abundant minerals in nature. Indonesia has a very diverse potential for minerals, ranging from iron ore, laterite iron ore, iron sand to iron sulphide ore. Sulphide ore is one of the minerals that has the potential to become the parent mineral for gold. One area that has sulfide ore is Wanggameti Village, Matawai Lapawu District, East Sumba Regency. This condition encourages research to be carried out with the aim of knowing the types of minerals in sulfide ores by XRD analysis and to identify the content of elements in sulfide ores by XRF analysis. The results showed that the results of XRD analysis of sulfide ore samples taken from Wanggameti Village, Matawai Lapawu District, East Sumba Regency contained minerals of the types Quartz (SiO2), Calsite (CaCO3), Corundum (Al2O3), Iron Aluminum Silicon (Fe3Al2Si3) and Muscovite 2M1 ( KAl2Si3AlO10(OH)2). And the results of the analysis of the content of elements in the sulfide ore with XRF is 36.6% Si; S 1.2%; K 5.0%; Ca 27.8%; Ti 1.98%; V 0.23%; Cr 0.09%; Mn 0.77%; Fe 19.3%; Ni 2.99%; Cu 0.43%; Zn 0.1%; Mo 2.8%; Ba 0.2%; Eu 0.2% and Re 0.3%. \u0000Keywords:sulfide ore, mineral type and chemical composition","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80392005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sintesis dan Karakterisasi Silika Gel Dari Limbah Batu Akik Asal Desa Nian Kabupaten Timor Tengah Utara Menggunakan Metode Sol Gel 东帝汶中北部地区的一种用索尔凝胶方法合成和从玛瑙废料中合成硅胶

Indonesian Journal of Chemical Research Pub Date : 2023-01-05 DOI: 10.20885/ijcr.vol7.iss2.art2

Lodowik Landi Pote, Putra Reinho Rosario Sanam, Gertreda Latumakulita

{"title":"Sintesis dan Karakterisasi Silika Gel Dari Limbah Batu Akik Asal Desa Nian Kabupaten Timor Tengah Utara Menggunakan Metode Sol Gel","authors":"Lodowik Landi Pote, Putra Reinho Rosario Sanam, Gertreda Latumakulita","doi":"10.20885/ijcr.vol7.iss2.art2","DOIUrl":"https://doi.org/10.20885/ijcr.vol7.iss2.art2","url":null,"abstract":"Penelitian tentang sintesis dan karakterisasi silika gel dari limbah batu akik asal Desa Nian Kabupaten Timor Tengah Utara menggunakan metode sol gel telah dilakukan. Penelitian ini bertujuan untuk mengetahui komposisi kimia, karakteristik silika gel yang disintesis dari limbah batu akik asal Desa Nian Kabupaten Timor Tengah Utara yang dapat digunakan sebagai sumber sintesis silika gel. Metode penelitian yang digunakan adalah metode sol gel. Penelitian ini diawali dengan pencucian serbuk limbah batu akik dengan HCl 2 M untuk menghilangkan unsur-unsur pengotor. Selanjut ekstraksi silika dilakukan dengan mereaksikan dengan NaOH 3 M untuk memperoleh natrium silikat. Natrium silikat yang diperoleh selanjutnya disintesis menjadi silika gel dengan menambahkan HCl 3 M tetes demi tetes sampai pH netral. Silika gel hasil sintesis dianalisis komposisi dengan XRF dan dikarakterisasi dengan XRD dan FTIR. Hasil penelitian menunjukkan bahwa komposisi kimia serbuk limbah batu akik dengan XRF diperoleh Si 35,6 % dan kandungan terbesar adalah Ca yaitu 54,3 %. Silika gel hasil sintesis memiliki kemurnian adalah SiO2 99,1 % dan Si 97,6 %. Hasil karakterisasi dengan XRD menunjukkan silika gel hasil sintesis berbentuk fasa amorf dan hasil karakterisasi gugus fungsi dengan FTIR menunjukkan adanya gugus fungsi siloksan dan silanol. \u0000Kata kunci: Sintesis, silika gel dan karakterisasi.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85066135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CALCULATION OF MEASUREMENT UNCERTAINTY IN ASTM D-4737 CALCULATED CETANE INDEX TESTING AND ASTM D-445 KINEMATIC VISCOSITY IN CEPU PPSDM OIL LABORATORY cepu PPSDM油品实验室astm d-4737计算十六烷指数试验和astm d-445运动粘度测量不确定度的计算

Indonesian Journal of Chemical Research Pub Date : 2022-08-31 DOI: 10.20885/ijcr.vol7.iss1.art5

I. Yanti, Riska Larasati

{"title":"CALCULATION OF MEASUREMENT UNCERTAINTY IN ASTM D-4737 CALCULATED CETANE INDEX TESTING AND ASTM D-445 KINEMATIC VISCOSITY IN CEPU PPSDM OIL LABORATORY","authors":"I. Yanti, Riska Larasati","doi":"10.20885/ijcr.vol7.iss1.art5","DOIUrl":"https://doi.org/10.20885/ijcr.vol7.iss1.art5","url":null,"abstract":"Uncertainty is a parameter that defines the range of values in which it is estimated that the true measured value lies. The concept of uncertainty is very important for measurement results, because uncertainty expresses the quality of measurement or test results. Measurements and tests have not been declared complete without an uncertainty value. The smaller the value of uncertainty, the more accurate and precise the results of the research or test carried out will be. The purpose of this Field Work Practice is to determine the uncertainty value of the Calculated Cetane Index (CCI) ASTM D-4737 and Kinematic Viscosity ASTM D-445 tests in the Cepu Migas PPSDM laboratory. In testing the measurement uncertainty with CCI ASTM D-4737 and Kinematic Viscosity ASTM D-445 using diesel as a sample, the test was carried out for 7 days with 2 repetitions of the test every day. ± 6,980, and the results of the calculation of uncertainty by testing the Kinematic Viscosity ASTM D-445 is ± 0.40. Based on these results, the data obtained can be accepted because the results obtained are smaller than the reproducibility value.","PeriodicalId":33936,"journal":{"name":"Indonesian Journal of Chemical Research","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88106378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sintesis Kitosan dari Cangkang Kepiting Dengan Metode Pemanasan Microwave Selama 2 Menit 用微波炉加热方法合成蟹壳Kitosan 2分钟

Indonesian Journal of Chemical Research Pub Date : 2022-07-20 DOI: 10.20885/ijcr.vol7.iss1.art4

Salmahaminati Salmahaminati

引用次数: 0

Adsorpsi Logam Cu(II) Menggunakan Adsorben Kulit Buah Salak Teraktivasi HNO3 Cu(II)使用激活HNO3的Salak果皮Adsorben

Indonesian Journal of Chemical Research Pub Date : 2022-07-18 DOI: 10.20885/ijcr.vol7.iss1.art1

Gani Purwiandono, Suleman Ibrahim

引用次数: 1

Studi Adsorpsi Logam Pb(II) Menggunakan Adsorben Kulit Rambutan Teraktivasi HNO3 dan NaOH Pb(II)使用激活的HNO3和NaOH皮肤Adsorben进行金属成瘾研究

Indonesian Journal of Chemical Research Pub Date : 2022-07-18 DOI: 10.20885/ijcr.vol7.iss1.art2

Gani Purwiandono, Army Sany Haidar

引用次数: 2

Water and Protein Analysis of Sausage product In PT. Jakarana Tama Bogor Tama茂物PT. Jakarana香肠制品的水分和蛋白质分析

Indonesian Journal of Chemical Research Pub Date : 2022-01-24 DOI: 10.20885/ijcr.vol6.iss2.art7

Salmahaminati Salmahaminati

引用次数: 2

ANALYSIS OF TOTAL NITROGEN LEVELS IN SOLID FERTILIZER WITH KJEDAHL METHOD IN BALAI PENGKAJIAN TEKNOLOGI PERTANIAN (BPTP) YOGYAKARTA 日惹balai pengkajian technologipertanian (bptp)固体肥料中总氮含量的kjedahl法分析

Indonesian Journal of Chemical Research Pub Date : 2022-01-17 DOI: 10.20885/ijcr.vol6.iss2.art4

F. I. Fajarwati, Athalia Tasya Hermawati, Sri Widada

引用次数: 0

Analysis of Levels of Phenol and Chemical Oxygen Demand (COD) in Tinplate Outcome of Electroplating Waste in PT Latinusa, Tbk Cilegon Latinusa, Tbk Cilegon电镀废铁渣中苯酚和化学需氧量(COD)含量分析

Indonesian Journal of Chemical Research Pub Date : 2022-01-17 DOI: 10.20885/ijcr.vol6.iss2.art3

Salsa Widya Pratiwi, M. Utami

引用次数: 0