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Concentrations of booster biocides in sediment and clams from Vietnam
Harino, H.; Midorikawa, S.; Arai, T.; Ohji, M.; Cu, N.D.; Miyazaki, N. (2006). Concentrations of booster biocides in sediment and clams from Vietnam. J. Mar. Biol. Ass. U.K. 86(5): 1163-1170
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keywords
    Analytical methods; Analytical techniques; Biocides; Chemical analysis; Clams; Degradation; Methodology; Pesticides; Sampling; Sediment pollution; Sediments; Standard deviation; Standard deviation; Standard deviation; ISEW, Vietnam [Marine Regions]; Vietnam [Marine Regions]; Marine

Authors  Top 
  • Harino, H.
  • Midorikawa, S.
  • Arai, T.
  • Ohji, M.
  • Cu, N.D.
  • Miyazaki, N.

Abstract
    An analytical method for the simultaneous determination of five booster biocides (Sea-Nine 211, Dichlofluanid, Duiron, Irgarol 1051 and Pyrithiones) and degradation product of Irgarol 1051 (M1) in sediment from Vietnam was developed by LC/MS-MS. The recovery rates and relative standard deviation of the booster biocides in the sediment were in the range of 71-108% and 1.5-12%, respectively, and the detection limits were in the range of 0.04-2 µg kg-1 dry. An analytical method for the simultaneous determination of three booster biocides (Sea-Nine 211, Duiron and Irgarol 1051) and M1 in clams was also developed by LC/MS-MS. The recovery rates and relative standard deviations of the booster biocides in the biological samples were in the range of 60-99% and 3.4-6.8%, respectively, and the detection limits were in the range of 0.24-1.1 µg kg-1). The booster biocides in sediment from the coastal area of northern and central Vietnam were measured using this analytical method. Sea-Nine 211, Dichlofluanid, Duiron, Irgarol 1051, M1 and Pyrithiones were detected in the range of 0.09-1.3 µg kg-1 dry, <0.10-13 µg kg-1 dry, 0.11-3.0 µg kg-1 dry, 0.05-4.0 µg kg -1) dry, <0.1-0.43 µg kg -1 dry and <2-420 µg kg -1 dry, respectively. The detection frequencies of Dichlofluanid, M1 and Pyrithiones were low. The species and levels of detected booster biocides varied between sampling stations. Irgarol 1051 and its degradation product M1 were not detected in clams.

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