geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Extraction of lead ions by electromembrane isolation


, : Extraction of lead ions by electromembrane isolation. Journal of Chromatography. A 1213(1): 14-18

A new microextraction approach namely electromembrane isolation (EMI) coupled with capillary electrophoresis (CE) and ultraviolet (UV) detection for determining lead (Pb) ions was developed. The EMI technique involved the use of a polypropylene hollow fiber whose channel was filled with a sodium dihydrogen phosphate/sodium tetraborate buffer solution of pH 8.1, immersed in 10 mL of an aqueous sample solution. A voltage of 300 V was applied across the hollow fiber wall for 15 min to extract Pb ions. The extract was then complexed with ethylenediamminetetracetic acid (20 mM EDTA solution, at pH 3.4) for CE analysis. Satisfactory linear dynamic ranges (0.1-10 mg L(-1)), limits of detection (0.019 mg L(-1)) and good repeatability (ranging from 4.9 to 15.6%, n=3) were obtained. EMI exhibits good linearity with a correlation coefficient of 0.9935. The optimized EMI procedure was applied to determine the concentration of Pb(2+) in various matrices, such as amniotic fluid, blood serum, lipstick and urine samples.

US$19.90

PMID: 18962652

DOI: 10.1016/j.chroma.2008.10.041


Other references

Kulenkamp, A.W.; Coleman, T.H.; Peterson, R.A., 1968: Some comparisons of "vibrator" and "normal" turkeys. Poultry Science 47(5): 1459-1463

Fossli Jensen, Bård.; Gulbrandsen, Pål.; Benth, J.Saltyte.; Dahl, F.A.; Krupat, E.; Finset, A., 2010: Interrater reliability for the Four Habits Coding Scheme as part of a randomized controlled trial. To describe the process for developing interrater reliability (IRR) for the Four Habits Coding Scheme (4HCS) for a heterogeneous material as part of a randomized controlled trial. Videotapes from 497 hospital encounters involving 71 doctors from m...

Del Rio, M.; Chulia, T.; Tejerina, T., 1993: Effects of indapamide on vascular reactivity in hypercholesterolemic rabbits. We tested the effects of indapamide (IND), an antihypertensive drug, on the contractile responsiveness of femoral and mesenteric arteries isolated from rabbits fed with a 1% cholesterol diet for 16 weeks. IND (0.1, 0.3, 1 mg/kg/day) was given to t...

Deshimaru, O.; Kuroki, K., 1974: Studies on a purified diet for prawn. 1. Basal composition of diet. 1. Prawns (Penaeus japonicus) were given 14 purified diets with different nutrient contents. Diet with casein 54, egg white 6% as protein source gave good feed efficiency. Diet with 6% of a mixture of soya bean and cod liver oils 1:1 as fat source...

Kuperman, A.Asher.; Yaniv, I.; Stahl, B.; Tamary, H., 2003: Methylphenidate as a possible cause of thrombocytopenia. Annals of PharmacoTherapy 37(7-8): 1146-1146

Keehn, J.D.; Nobrega, J., 1978: Stereotyped behaviors during acquisition and extinction in rats. Activity, grooming, exploration, gnawing, drinking and nosing stereotypies in 10 white rats were monitored under adaptation, shaping, continuous reinforcement, fixed-interval reinforcement and extinction conditions. Exploration predominated, excep...

Sivaneswaran, S., 2009: The oral health of adults in NSW, 2004-06. The 2004-06 National Survey of Adult Oral Health was Australia's second oral examination survey of a nationally representative sample of adults. The aim of this paper is to provide a brief overview of oral health in the NSW adult population f...

Jürgenliemk, G.; Petereit, F.; Nahrstedt, A., 2007: Flavan-3-ols and procyanidins from the bark of Salix purpurea L. From a commercial aqueous ethanolic extract obtained from the bark of Safix purpurea L. the flavan3-ols catechin, epicatechin, gallocatechin, catechin-3-O-(1-hydroxy-6-oxo-2-cyclohexene-1-carboxylic acid)-ester, the dimeric procyanidins B1, B3 an...

Chilver, K., 2015: Gove attack highlights why we urgently need to defend our NHS. Nursing Standard 1987) 29(50): 30-30

Zhu, C.W.; Cosentino, S.; Ornstein, K.A.; Gu, Y.; Andrews, H.; Stern, Y., 2017: Interactive Effects of Dementia Severity and Comorbidities on Medicare Expenditures. Few studies have examined how dementia and comorbidities may interact to affect healthcare expenditures. To examine whether effects of dementia severity on Medicare expenditures differed for individuals with different levels of comorbidities. Data...