Analisis Kromium heksavalen (Cr-VI) dan ion sulfat (SO42-) pada air sungai yang ada di lingkungan kota Semarang bertujuan untuk mengetahui kualitas dibandingkan dengan Peraturan Pemerintah Nomor 22 Tahun 2021. Konsentrasi ditentukan menggunakan metode spektrofotometri pereaksi 1,5-diphenylcarbazide dianalisis spektrofotometer UV-Vis panjang gelombang 540 nm, sedangkan penentuan kadar turbidimet...

A new series of Mn-based catalysts (Mn-TiO2, Ce-Mn-TiO2, Mn-TiO2-SO42–, and Ce-Mn-TiO2-SO42–) were successfully elaborated using the sol–gel method associated with supercritical drying approach for low-temperature NO-SCR by NH3. The physicochemical properties aerogel powders examined XRD, N2-Physisorption at 77 K, NH3-TPD, H2-TPR, DRUV-Vis spectroscopy. It was shown that all develop essentially...

The rapid changes in the pattern of atmospheric warming as well degradation glaciers Himalayas point to inevitability accurate source characterization and quantification impact aerosols. In this regard, optical chemical properties aerosols, their role radiative effects are examined over a remote high-altitude site Lachung (27.4°N, 88.4°E, 2700 m a.s.l.) eastern during August-2018 February-2020....

Ambient aerosol samples were collected over the northern Indian Ocean during two 1 month-long research cruises (German R/V Meteor) that took place during the intermonsoon (May) and SW monsoon (July/August) of 1995. A high volume and two small volume collectors were used to collect samples, which were subsequently analyzed for ferrous iron, 32 elements, and anions and cations. The present paper ...

Inorganic sulphate and silicate is required by all mammalian cells to function properly, it the most abundant anion in human plasma. Sulphate ions are major source of sulphur which considered an important element for sustenance life as present essential amino properly.This paper aimed compare constitutional physical property pure hydroxyapatite (HA) doped with different kinds anions such (SO42-...