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Lin Y, Yang Y, Li Y, Yang L, Hou X, Feng X, Zheng C. Ultrasensitive Speciation Analysis of Mercury in Rice by Headspace Solid Phase Microextraction Using Porous Carbons and Gas Chromatography-Dielectric Barrier Discharge Optical Emission Spectrometry. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2468-2476. [PMID: 26828416 DOI: 10.1021/acs.est.5b04328] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Rice consumption is a primary pathway for human methylmercury (MeHg) exposure in inland mercury mining areas of Asia. In addition, the use of iodomethane, a common fumigant that significantly accelerates the methylation of mercury in soil under sunlight, could increase the MeHg exposure from rice. Conventional hyphenated techniques used for mercury speciation analysis are usually too costly for most developing countries. Consequently, there is an increased interest in the development of sensitive and inexpensive methods for the speciation of mercury in rice. In this work, gas chromatography (GC) coupled to dielectric barrier discharge optical emission spectrometry (DBD-OES) was developed for the speciation analysis of mercury in rice. Prior to GC-DBD-OES analysis, mercury species were derivatized to their volatile species with NaBPh4 and preconcentrated by headspace solid phase microextraction using porous carbons. Limits of detection of 0.5 μg kg(-1) (0.16 ng), 0.75 μg kg(-1) (0.24 ng), and 1.0 μg kg(-1) (0.34 ng) were obtained for Hg(2+), CH3Hg(+), and CH3CH2Hg(+), respectively, with relative standard deviations (RSDs) better than 5.2% and 6.8% for one fiber or fiber-to-fiber mode, respectively. Recoveries of 90-105% were obtained for the rice samples, demonstrating the applicability of the proposed technique. Owing to the small size, low power, and low gas consumption of DBD-OES as well as efficient extraction of mercury species by porous carbons headspace solid phase micro-extraction, the proposed technique provides several advantages including compactness, cost-effectiveness, and potential to couple with miniature GC to accomplish the field speciation of mercury in rice compared to conventional hyphenated techniques.
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Affiliation(s)
- Yao Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu, Sichuan 610064, China
| | - Yuan Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu, Sichuan 610064, China
| | - Yuxuan Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu, Sichuan 610064, China
| | - Lu Yang
- National Research Council Canada, Ottawa, Canada K1A 0R6
| | - Xiandeng Hou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu, Sichuan 610064, China
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences , Guiyang 550081, China
| | - Chengbin Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University , Chengdu, Sichuan 610064, China
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Dietrich GJ, Dietrich M, Kowalski RK, Dobosz S, Karol H, Demianowicz W, Glogowski J. Exposure of rainbow trout milt to mercury and cadmium alters sperm motility parameters and reproductive success. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2010; 97:277-284. [PMID: 20044150 DOI: 10.1016/j.aquatox.2009.12.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Revised: 11/27/2009] [Accepted: 12/08/2009] [Indexed: 05/28/2023]
Abstract
In the current work, seminal plasma was used for the first time as an incubation medium for monitoring short-time exposure effects of sublethal concentrations of mercury and cadmium ions on rainbow trout sperm. Sperm motility parameters (CASA) and hatching rates were used as gamete quality markers. Additionally live/dead sperm viability test and comet assay of DNA fragmentation were performed. We demonstrated that computer-assisted sperm motility analysis (CASA) may serve as a predictor of reproductive success, when milt contaminated with heavy metals is used. Results presented in this study demonstrate that mercury ions altered sperm motility characteristics at 1-10 mg Hg2+/l and 10 mg Cd2+/l and hatching rates at 10 mg Hg2+/l and 10 mg Cd2+/l after 4h of exposure. Although mercury ions affected sperm motility parameters immediately after dilution with milt as well as at 4h of exposure, no differences in sperm motility parameters were found between intact and mercury-treated milt after 24h of exposure. Our results suggest that rainbow trout seminal plasma has a protective role against the toxic effects of mercury ions of rainbow trout sperm motility.
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Affiliation(s)
- Grzegorz J Dietrich
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-747 Olsztyn, Poland.
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Burger J, Cooper K, Saliva J, Gochfeld D, Lipsky D, Gochfeld M. Mercury bioaccumulation in organisms from three Puerto Rican estuaries. ENVIRONMENTAL MONITORING AND ASSESSMENT 1992; 22:181-197. [PMID: 24226951 DOI: 10.1007/bf00419568] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We analyzed mercury levels in shrimp (Palaemonetes sp.), Blue Crabs (Callinectes sp.), fish (Tarpon Megalops atlantica and Tilapia Tilapia mossambica), lizards (Ameiva exsul), Cattle Egret (Bubulcus ibis) and Moorhen (Gallinula chloropus) in three estuaries in Puerto Rico in 1988. There were no quantifiable concentrations greater than the method detection limit of mercury in shrimp, crabs and lizards from any site. Mercury levels were also below detection limits in Tilapia, except for specimens collected at Frontera Creek, allegedly contaminated with mercury. However, mercury levels ranged from 92-238 μg/kg (wet weight) in Tarpon, a predaceous fish that feeds on smaller fish. Few of the birds had detectable levels of mercury. Our results indicate relatively low concentrations of mercury in biota collected in all of the three estuaries at most trophic levels, although 10 of 12 Tarpon fillet samples from Frontera had detectable mercury compared to 3 of 12 fillet samples for the other two lagoons.
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Affiliation(s)
- J Burger
- Department of Biological Sciences, Rutgers University, 08855, Piscataway, New Jersey, USA
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Gauldie RW, Fournier DA, Dunlop DE, Coote G. Atomic emission and proton microprobe studies of the ion content of otoliths of chinook salmon aimed at recovering the temperature life history of individuals. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1986; 84:607-15. [PMID: 2875827 DOI: 10.1016/0300-9629(86)90374-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Atomic emission experiments on whole otoliths of the chinook salmon (Oncorhynchus tshawytcha) show that a statistically significant relationship exists between otolith ion content (Fr, Zn, Mn, Na, Sr, P), ambient temperature, body length and otolith weight amongst individuals maintained under controlled diet and water conditions. Direct proton microprobe studies confirm these results and suggest that it may be possible to recover the temperature life history of individual fishes from the otolith.
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Matsunaga K, Tsujioku H, Fukasa S, Hasebe K. On the Behavior of Mercury in Some Polluted Seawater. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1978. [DOI: 10.1246/bcsj.51.3519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Koli AK, McClary E. Magnitude of Mercury Levels in Fish Muscle Tissue from South Carolina Waters. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1978. [DOI: 10.1246/bcsj.51.1521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Estimation of variation of mercury concentration in the oceans during the last several decades. ACTA ACUST UNITED AC 1976. [DOI: 10.1007/bf02107655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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