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- W2379120908 abstract "Objective To introduce a new method for determination of urinary iodine by using ammonium persulfate digestion, this method was modified from the national standard method of chloric acid digestion. Methods The modification for the national standard method was conducted and the methodological assessment for the modified method was worked out according to the guide for methods of monitoring biological materials. Results The calibration range of the new method was 0 - 300 μg/L and the lowest limit of detection was 3μg/L or 0.75 ng (0.25 ml of urine was tested). The test variations (CV) were 5.5%, 2.8% and 4.4% when measuring urine samples with iodine concentration of 63.3 μg/L, 129.8μg/L and 252.5μg/L, respectively. The average recovery was 98.3% with a range of 92.6%-107.0% when measuring urine samples containing different iodine concentration. The test results of Standard material were all within the given range and the relevant deviation (RD) was 4.9% and 1.0%, respectively. This method can be performed not only in the controlled temperature (using water bath), but also in a certain stable room temperature between 20-35℃. Conclusions This new modified method is easier to be performed with better precision and accuracy, and this method is suitable to almost routine laboratories for measuring iodine in urine." @default.
- W2379120908 created "2016-06-24" @default.
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- W2379120908 date "2004-01-01" @default.
- W2379120908 modified "2023-09-23" @default.
- W2379120908 title "Method for measuring iodine in urine by As3+-Ce4+ catalytic spectrophotometry using ammonium persulfate digestion" @default.
- W2379120908 hasPublicationYear "2004" @default.
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