The aim of this study was to evaluate the possible penetration through human skin of organic and inorganic filters contained in sunscreen emulsions packaged in aerosol cans, using an in vitro method. Experiments were carried out on two different types of emulsion: W/Si and W/O. This study was conducted using static diffusion cells (Franz cells). The determination of organic UV filters [Methylen...

Eight trace elements (Al, V, Ni, As, Ba, Cd, Pb, and Hg) were quantitatively studies in three kinds of hen egg samples (home, street, market eggs) collected from different regions Aden city-Yemen including Al-Buraiqeh, Al-Hiswah, Khormaksar, Shaikh Othman. Samples wet digested analyzed by the Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) technique. Neglecting not detected v...

Calcium-based catalysts are of high interest for glycerol polymerization due to their catalytic activity and large availability. However, poor stability under reaction conditions is an issue. In the present study, we investigated Ca-hydroxyapatites (HAps) as one most abundant Ca-source in nature. A stochiometric, Ca-deficient Ca-rich HAps were synthesized tested reaction. Deficient stochiometri...

<p>Emas merupakan logam mulia yang dapat dijadikan investasi karena nilainya terus naik dari waktu ke waktu. Barang – barang emas berbentuk batangan, granula, lembaran, perhiasan dan benda seni. Penjaminan mutu kadar diatur dalam SNI 13-3487-2005 13-3771-1995 muda. Pada saat ini beredar memiliki mulai 3,33% hingga 99,99% (<em>fine gold</em>). Terdapat nilai belum ke-dua terseb...

The elemental composition of control and pathological adrenal tissues remains to be resolved. This study aimed provide an initial insight into the amounts micro- (Mn, Co, Cu, Zn, As, Se, Cd, Pb, U) macroelements (Na, K, Mg, Ca) in healthy tissue (HAT) adenomatous (AAT) samples collected from patients with adenoma (AA) using inductively coupled plasma mass spectrometry (ICP-MS) optical emission ...

A green and fast sample preparation method based on reversed-phase dispersive liquid–liquid microextraction was developed for the separation preconcentration of several elements in gasoline samples before ICP-OES determination.