A lithium internal-standard flame photometer.
نویسندگان
چکیده
منابع مشابه
Electrical modifications of the Baird flame photometer which simplify calibration and improve accuracy of low potassium readings.
1HE BAIRD ASSOCIATES FLAME PHOTOMETER designed by White (1) has many advantages in the clinical laboratory for the measurement of serum sodium and potassium because of its simplicity and reliability. A balanced 2-photocell circuit with lithium salt in the diluent as an internal standard largely eliminates the effect of liquid height in the entrance funnel, gas and air pressure, flame’temperatur...
متن کاملFurther modification of flame photometer. Dual-channel circuit for convenient determination of sodium and potassium.
S PART OF A CONTINUING PROGRAM in this laboratory directed toward the improvement of clinical laboratory procedures and instruments, additional modifications (1) of the flame photometer have been devised to obtain the benefits of modern components and circuits. Flame photometers using self-generating photocells have proved to be stable and reliable instruments in hundreds of clinical laboratori...
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We report a colorimetric method for determining lithium in blood serum without sample pretreatment or solvent-extraction steps. The method is based on a novel chromogenic ionophore that exhibits exceptionally high selectivity (much greater than 4000:1) for lithium over sodium. The standard curve for the method is linear up to 3.5 mmol/L and exceeds the therapeutic range for lithium. The results...
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Recently there have been several advances in instrumental methods for the flame emission analysis of electrolytecations of clinical significance. Greater precision and increased ease of operation are among today’s clinical requirements. This study compares a new automated flame photometer, “Klina Flame” (Beckman Instruments) with a “Techtron-AA5” atomic absorption emission unit (Varian Instrume...
متن کاملContinuous-recording flame photometry of sodium and potassium in serum.
Serum sodium and potassium analyses by continuous-flow flame photometry is a well-accepted procedure (1, 2). Recently Habig and Williamson (3) have used the widely available Instrumentation Laboratory Model 143 (IL-143) flame photometer for continuousflow analyses. Pennacchia et al. (4) have operated this flame photometer at rates as high as 120 samples per hour. In both systems the results app...
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ورودعنوان ژورنال:
- The Biochemical journal
دوره 69 2 شماره
صفحات -
تاریخ انتشار 1958