Manganese is quantitatively retained on 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP)-ammonium tetraphenylborate with microcrystalline naphthalene or by a column method in the pH range 7.5-10.5 from large volumes of aqueous solutions of various samples. After filtration, each solid mass consisting of the manganese complex and naphthalene was dissolved with 5 ml of dimethylformamide...

Strains of Serratia spp. showed a high level of virulence when injected into the hemocoel of larvae Costelytra zealandica, with Serratia entomophila, S. plymuthica, and S. marcescens showing significantly higher virulence than S. proteamaculans. Toxicity was independent of the amber disease-causing plasmid pADAP, suggesting a generalized Serratia toxin.

Pengembangan kurikulum 2013 revisi 2018 program keahlian teknik kendaraan ringan padap rogram pengembangan diri. diri yang ditentukanoleh SMK Muhammadiyah 2 Tempel diharapakan dapatmemberikan kompetensi tambahan bagi siswa untuk berwirausaha dan bekerja. Metode digunakan menggunakan analisis struktur kurikulum, kebutuhan pasar, implenetasi waktu pembelajaran, sarana-prasarana. Hasil pengabdian ...

in this work, a new extractant was prepared by immobilizing ligand 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol, (5-br-padap), on the activated carbon and applied to extraction of pb(ii) prior to determination by flame atomic absorption spectrometry. it was confirmed by ft- ir analysis. the metal ion was retained on the 0.05 g of the sorbent in the ph range 6-8, and then eluted with 5 ml of 0....

This work assesses the use of modified natural natrolite zeolite as an adsorptive material for the separation and preconcentration of trace amounts of ions. In this work we investigated the potential of modified natural natrolite zeolite for the simultaneous separation and preconcentration of trace amounts of copper and zinc ions. We have developed a simple, rapid, selective, sensitive and econ...

A poly(vinyl chloride) matrix membrane sensor for the selective determination of thiocyanate has been developed based on the use of copper(II)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol complex (Cu-PADAP) as a novel charged carrier, and o-nitrophenyloctyl ether (o-NPOE) as a solvent mediator. The sensor displays a significantly enhanced response towards SCN(-) ions over the concentration ran...