THE INITIAL STUDIES BY WILLIS (2, 3) and the more recent work of Zettner and Seligson (i) and others (4-7, 9-11) have proven the utility of atomic absorption spectrophotometry (AAS) in the clinical laboratory. However, until very recently there has been very little if any published information dealing with normal serum calcium values by atomic absorption spectrophotometry (11). The primary purp...

The direct chelation-extraction method, originally developed by Hessel (1968) for blood lead analysis, has been successfully applied to urinalysis for manganese. The analyses of 35 urine samples containing up to 100 microgram/1 of manganese from manganese-exposed workers showed that the data obtained by this method agree well with those by wet digestion-flame atomic absorption spectrophotometry...

The article considered the ability to grow mint mentha piperita and Agstache rugosa in laboratory conditions. extraction of essential oil from Mint Agastache its chemical composition were determined. amount was studied using spectrophotometer NMR spectroscopy methods. has been relatively. quality, composition, physical parameters oils studied, their differences study relative obtained by spectr...

We present low resolution spectrophotometric and imaging ISO observations of a sample of 58 AGN's over the 2.5-11.6 Jl range. The data strongly support unification schemes and set new constraints on models of the molecular torus.

A new synthetic medium having negligible ultraviolet absorbance is described for growing staphylococci in experiments requiring ultraviolet spectrophotometry of cell-free portions of the culture.

A first-derivative spectrophotometric method was developed for quantitative determination of two synthetic organic dyes, Carmoisine and Patent Blue V, which are under governmental regulations all over the world because of their toxicity and carcinogenity. In this study, Carmoisine and Patent Blue V were simultaneously determined in their binary mixtures by first-derivative spectrophotometry. Th...