Flame Lines and Bands of Analytical Importance

Wavelength (mp) Element Wavelength (mp) Element Wavelength (m. t) Element 

Determination of Magnesium and Calcium in Biological Fluids and Tissues 

The methods in use in the author s laboratory for determination of calcium and magnesium in plasma and urine and in fecal and tissue ash are described below in detail. Willis (W2) has shown that absorption methods are also suitable. The methods described here have proved reliable in practice over several years of intensive use. 

while the acetylene pressures are approximately 200 mm and 150 mm of water for magnesium and calcium, respectively. Slit widths of 

02 mm are used in each case, and the instrument is operated at full sensitivity. 

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