Speciation of dissolved Fe(II) and Fe(III) in environmental water samples by micro-column packed with N-benzoyl-N-phenylhydroxylamine loaded on microcrystalline naphthalene and determination by electrothermal vaporization inductively coupled plasma-optical emission spectrometry

Determination of multi element levels in leaves and herbal teas from Turkey by ICP-OES

“…Cr(III) plays a crucial role in human physiology by stimulating glucose metabolism, controlling blood cholesterol levels, stimulating the synthesis of protein, increasing resistance to pain and suppressing hunger pain [14,26]. Our study on the herbal tea leaves determined Cr levels 3.0±0.1 and 8.0±0.1 µg/g whereas, in flowers were 2.0±0.1 and 5.0±0.3µg/g, reported values ranged from 0.33 to 2.43 µg/g Cr in herbal tea samples [27] and 0.45 to 0.99 µg/g Cr in green tea [28] and reported range from 2.95 to 7.6 µg/g in black tea samples from South India.…”

“…Ni in tea was found in the range of 1.1 to 5.3 µg/g. The lowest Ni content was found in Nilgiris teas and the highest in tea from Vandiperiyar and Permedu [27,28] and the range of Ni concentration is reported in the samples as 2.9 and 22.6 µg/g. These results are similar to our study.…”

FORMULA ESTABLISHMENT OF COLORLESS Pb(II) COMPLEX WITH N-BENZOYL-N-PHENYL HYDROXYLAMINE (BPA) USING ATOMIC ABSORPTION SPECTROSCOPY

“…The structure of BPA [26] is shown in Fig.1. To achieve the maximum extraction of Pb(II) in the liquid -liquid extraction process, it is essential to optimize the various experimental conditions such as the effect of different solvents, pH of the solution and effect of stripping agents on percentage recovery.…”

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

“…The membrane-based sensor may not be as ultrasensitive as other reported methods, 7,8 as shown in Table 2, but it offers a simple one-step procedure with an easy colorimetric readout. Most of the reported methods are multistep 4 that involve complex methodologies, 2,6 or device fabrication 18,19 that require a high-degree of expertise.…”