Heavy metals contamination in fish from coral reef ecosystem and ecology risk evaluation

Transcription

1 32 2 Vol. 3 2 No MARINE ENVIRONMENTAL SCIENCE April Cr Mn Cu Zn As Pb Hg 7 P i Cr > As > Mn > Hg > Zn > Cu > Pb Cr As P i Cr As X55 A Heavy metals contamination in fish from coral reef ecosystem and ecology risk evaluation LIU Jin-ling 1 XU Xiang-rong 1 DING Zhen-hua 2 JIN Ming-hua 2 WANG Shuai-long 1 HAO Qing 1 1. CAS Key Laboratory of Marine Bio-resources Sustainable Utilization South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China 2. College of the Environment & Ecology Xiamen University Xiamen China Abstract To study the pollution status quo of heavy metals in coral reef ecosystem in Hainan Island concentrations of heavy metals including Cr Mn Cu Zn As Pb and Hg in wild fish were determined. Single factor pollution index P i was employed to evaluate the heavy metal pollution level. The results showed that enriched degree of the heavy metals in fish can be ranked from high to low as Cr > As > Mn > Hg > Zn > Cu > Pb heavy metals prefer to be accumulated in gill and viscera. Obvious bioaccumulation of Cr and As in fish of coral reef ecosystem was observed. P i indicated that coral reef ecosystem in Hainan Island has been heavily polluted by Cr and moderately polluted by As. Other metals have shown no pollution or slight pollution. Key words heavy metal fish coral reef risk assessment M liujinling@ scsio. ac. cn

2 2 263 MnMn P i < P i < P i < Cu 1. 0 P i 1. 0 Pb Zn Mn Cr Hg As Cr Mn Cu Zn 1 As Pb Hg 1 5 Mn 1. 1 GB Scorpaena neglecta Ostichthys kaianus 20 WHO Heniochus acuminatus Scarus lunula Lutjanus monostigma Cr As As Cu Pb Zn Mn Cr As Mustafa g g 100 ml 10 ml HNO 3 1 mol / L 1 ml H 2 O 2 30% 250 W min 0 W min Pb Hg 5 Cr 250 W min 400 W min 550 W 210 Cr As 8 min 8 min 10 ml ICP-MS DRC-e ANOVA P < Cr 5 PE Hg > > 14 Lumex Lumex Cu Zn Pb Hg Cr 5 Cr As 5 Mn Cu Zn Cr As > > Mn 5 Tort-2 NRCC > > > > As 5 Cu % Pb 85. 9% Zn 92. 1% Mn % Cr > > > > Hg % As % Hg 95. 5% < > > 10% > > 1. 3 Balasubramanian P i = C i / S i > > > > P i C i i 4 S i i Cr As

3 Tab. 1 Concentrations of heavy metals in the muscles of five wild fishes from coral reef ecosystem / w /10-6 Cr Mn Cu Zn As Pb Hg ~ ~ ND ~ ~ ~ ~ ~ ~ ~ ND ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ND ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ a a NY b a GB b a a WHO ND a 4 1 b 1 10 Mn 2 5 Cr As Cr As Cu Zn Pb 5 Cu Pb 23 As As Cr As Cr Tab. 2 Comparison of heavy metal levels in marine fish in different ocean area w /10-6 Cr Cu Zn As Pb ND Pb Pb Mn Zn 3 Pb > > Cu 3 Pb 29 > > Cu As > Cu Pb Mn Zn As

4 Fig. 1 Distribution of heavy metals in different tissue of four fish from coral reef ecosystem 3 Tab. 3 Pollution index of heavy metals in the edible parts of wild fish from coral reef ecosystem P i Cr Mn Cu Zn As Pb Hg Cr > As > Mn > Hg > Zn > Cu > Pb Cr P i 1 As P i 0. 6 ~ 1. 0 Cr Pb As 5 GB Mn P i Hg Zn Cu Pb P i 0. 2 Cr As Cr As 3 As 30 Hg Cd 5 Mn Cu Zn Pb Hg 5

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