The determination of lead and cadmium in paint by atomic-absorption spectrophotometry utilising the Delves micro-sampling technique

The Analyst ◽  
1975 ◽  
Vol 100 (1191) ◽  
pp. 430 ◽  
Author(s):  
O. W. Lau ◽  
K. L. Li
Keyword(s):  
Atomic Absorption ◽  
Sampling Technique ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Spectrophotometry ◽  
Lead And Cadmium

Direct determination of lead and cadmium in blood and urine by flameless atomic absorption spectrophotometry.

1979 ◽  
Vol 25 (11) ◽  
pp. 1948-1953 ◽  
Author(s):  
V Lagesson ◽  
L Andrasko
Keyword(s):  
Atomic Absorption ◽  
Direct Determination ◽  
Atomic Absorption Spectrophotometry ◽  
Flameless Atomic Absorption ◽  
Absorption Spectrophotometry ◽  
Lead And Cadmium

Abstract We describe procedures for direct determination of lead and cadmium in blood and urine by flameless atomic absorption spectrophotometry. Before analysis, the samples are pre-ashed in microboats in an ordinary laboratory oven. In this way, many samples can be prepared and pre-ashed simultaneously. We find the procedures presented in this work to be rapid, accurate, and precise.

scholarly journals VALIDATION AND QUANTITATIVE ANALYSIS OF LEAD AND CADMIUM IN DRIED STEVIA LEAVES BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROPHOTOMETRY

2018 ◽  
Vol 127 (1A) ◽  
Author(s):  
Dong Kim Nguyen ◽  
Ngân Thi kim Lâm
Keyword(s):  
Atomic Absorption ◽  
Limit Of Detection ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
Limit Of Quantification ◽  
Absorption Spectrophotometry ◽  
Lead And Cadmium ◽  
Graphite Furnace Atomic Absorption ◽  
Gf Aas

<p><strong>Abstract: </strong>A Graphite Furnace - Atomic Absorption Spectrophotometry (GF-AAS) for the quantification of cadmium (Cd) and lead (Pb) in dried stevia leaves were developed and validated. The method was validated for some parameters, namely linearity and range, precision, accuracy, Limit of Detection (LoD) and Limit of Quantification (LoQ), according to International Conference on Harmonization (ICH). The developed method was linear over the concentration ranging 0 - 2 µg/L (Cd) and 0 – 20 µg/L (Pb). The correlation coefficient (r) obtained for two metal are higher than 0.995. Limit of detection (LOD) of Cd and Pb  was 0.12 µg/L, 0.33 µg/L. The recovery and repeatability in this method were good enough for determining these heavy metals in dried stevia leaves sample.The developed method has been applied successfully for determination of Cd and Pb levels in dried stevia leaves in Vietnam.</p><p class="Default"><strong>Keywords: Stevia, Atomic Absorption Spectrophotometera (AAS), recovery, detection limit, validation.</strong></p>

Determination of Minor Nutrients in Fertilizers by Atomic Absorption Spectrophotometry: Second Collaborative Study

1965 ◽  
Vol 48 (6) ◽  
pp. 1100-1103
Author(s):  
C H Mcbride
Keyword(s):  
Atomic Absorption ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Absorption Spectrophotometry ◽  
Minor Nutrients

Abstract The atomic absorption method studied last year was re-examined and extended to include calcium and sodium. The procedures were submitted to 16 collaborators for determination of Ca, Cu, Fe, Mg, Mn, Na, and Zn. Results for Ca and Na were discouraging; further study is recommended.

Comparison of Methods for Determining Biuret in Urea

1979 ◽  
Vol 62 (1) ◽  
pp. 153-159
Author(s):  
Luis F Corominas ◽  
Victor M Boy ◽  
Manuel Guijosa
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Determination ◽  
Atomic Absorption Spectrophotometry ◽  
International Organization ◽  
Comparison Of Methods ◽  
Definite Advantage ◽  
Absorption Spectrophotometry ◽  
Alternative Procedures ◽  
Aoac Method

Abstract The official first action AOAC method for the spectrophotometric determination of biuret in urea, 2.072—2.074, was compared with official first action AOAC method 2.C01-2.C03 (atomic absorption spectrophotometry), 2 simplified versions of 2.072-2.074, and modified versions of 2 alternative procedures of the International Organization for Standardization. Three synthetic urea samples (0.3, 1.4, and 3.0% biuret) and 1 commercial urea sample (1.0% biuret) were analyzed. The methods proved to be equivalent and none showed a definite advantage over 2.072-2.074. The purification of biuret and the interference by ammonia are also discussed.

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