Automated atomic absorption spectrophotometry. II. The determination of serum magnesium.

Determination of calcium and magnesium in serum, urine, diet, and stool by atomic absorption spectrophotometry.

ATOMIC ABSORPTION was developed by Walsh and his associates (1) as an analytical technic applicable to the determination of many metals. Willis (2-4) found that this technic was applicable in particular to tile determination of calcium and magnesium in Serum and urine. These published results indicated that atomic absorption spectrophotometry would be a simple, rapid, and practical method for t...

High-speed automated atomic absorption spectrophotometry.

We describe an integrated automated system for the atomic absorption spectrophotometer. The system makes use of a light-dependent resistor to detect the presence of a marker ion which is present along with the sample ion in the flame. An electronic circuit has been developed which enables the marker ion to trigger the read signal of the spectrophotometer. The system has been tested by determini...

Automated atomic absorption spectrophotometry. IV. Simultaneous determination of calcium and phosphate.

‘T1HI5 REPORT presents a procedure for the automated simultaneous determination of both calcium and phosphate, and its application to the analysis of a 0.6-mi. serum specimen. Calcium is determined by atomic absorption spectrophotometry, using a portion of the diluted and dialyzed serum sample (1). Phosphate is determined on the undialyzed residual serum by an improved automated spectrophotomet...

The determination of magnesium in biological materials by atomic absorption spectrophotometry.

Estimation of calcium and magnesium in serum and urine by atomic absorption spectrophotometry.

A method has been described for the estimation of calcium and magnesium in serum and urine using atomic absorption spectrophotometry. The precision and accuracy of the techniques have been determined and were found to be acceptable. THE RANGE OF VALUES FOR CALCIUM AND MAGNESIUM IN THE SERA OF NORMAL ADULTS WAS FOUND TO BE: serum calcium (corrected to a specific gravity of 1.026) 8.38-10.08 mg. ...