Spectrofluorometric method for determination of the total mercury content in environmental samples — Waste waters

1997 ◽  
Vol 127 (1-2) ◽  
pp. 61-65 ◽  
Author(s):  
Lazar Balint ◽  
Irena Vedrina-Dragojević ◽  
Blaženka Šebečić ◽  
Jelena Momirović-Čuljat ◽  
Marija Horvatić
Keyword(s):  
Environmental Samples ◽  
Total Mercury ◽  
Mercury Content ◽  
Waste Waters ◽  
Spectrofluorometric Method

Spectrofluorometric method for determination of the total mercury content in natural waters

1994 ◽  
Vol 198 (1) ◽  
pp. 29-32 ◽  
Author(s):  
Lazar Balint ◽  
Irena Vedrina-Dragojević ◽  
Marija Horvatić ◽  
Ivo Murati
Keyword(s):  
Natural Waters ◽  
Total Mercury ◽  
Mercury Content ◽  
Spectrofluorometric Method

Spectrofluorimetric method for the determination of the total mercury content in sediment and soil

1997 ◽  
Vol 355 (2-3) ◽  
pp. 151-156 ◽  
Author(s):  
I Vedrina-Dragojević ◽  
D Dragojević ◽  
S Čadež
Keyword(s):  
Total Mercury ◽  
Mercury Content ◽  
Spectrofluorimetric Method

Determination of Hg2+ Based on the Selective Enhancement of Peroxidase Mimetic Activity of Hollow Porous Gold Nanoparticles

NANO ◽  
2017 ◽  
Vol 12 (04) ◽  
pp. 1750050 ◽  
Author(s):  
Mingzhen Guo ◽  
Jiang He ◽  
Shuang Ma ◽  
Xiaohan Sun ◽  
Mingda Zheng
Keyword(s):  
Gold Nanoparticles ◽  
Total Mercury ◽  
High Selectivity ◽  
Yellow River ◽  
Tap Water ◽  
Mercury Content ◽  
High Catalytic Activity ◽  
Porous Gold ◽  
Selective Enhancement

In this paper, a novel colorimetric biosensor for Hg[Formula: see text] is presented based on Hg[Formula: see text] stimulated peroxidase-like activity of hollow porous gold nanoparticles (HPGNPs). Under mild conditions, HPGNPs show high catalytic activity toward the oxidation of 3, 3[Formula: see text], 5, 5[Formula: see text]-tetramethylbenzidine (TMB) using H2O2 as an oxidant. The peroxidase-like activity of HPGNPs is “switched-on” selectively in the presence of Hg[Formula: see text], which permitted a novel and facile colorimetric sensor for Hg[Formula: see text]. This method exhibits many merits like high selectivity and sensitivity. As low as 18.5[Formula: see text]nM Hg[Formula: see text] could be determined at a linear range from [Formula: see text][Formula: see text]M to [Formula: see text][Formula: see text]M. This method is successfully applied for the determination of total mercury content in tap water and Yellow River which indicates that the method has a great potential for the routine determination of Hg[Formula: see text] in environmental samples.

Reduction of organic mercury in water, urine, and blood by sodium borohydride for direct determination of total mercury content.

1984 ◽  
Vol 30 (2) ◽  
pp. 243-245 ◽  
Author(s):  
S Margel ◽  
J Hirsh
Keyword(s):  
Sodium Borohydride ◽  
Total Mercury ◽  
Inorganic Compounds ◽  
Direct Determination ◽  
Mercury Content ◽  
Cupric Sulfate ◽  
Sulfate Concentration ◽  
Effects Of Ph ◽  
Precise Quantification

Abstract We have established the optimal conditions for use of sodium borohydride as the reducing agent before the direct determination of mercury in water, urine, and blood by atomic absorption spectroscopy. We evaluated the effects of pH, temperature, and cupric sulfate concentration on the direct determination of both organic and inorganic compounds of mercury. Accurate and precise quantification of mercury requires that the pH be between 9.3 and 9.5, the reaction temperature above 25 degrees C, the reaction time longer than 1 min, and, for urine samples only, the cupric sulfate concentration 10 mumol/L. The detection limit of the method is 1 to 2 ng and the precision (CV) is 3.8% for blood and 4.0% for urine.

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