Comparison of Characteristics of Heavy Metals in Different Grain Sizes of Intertidalite Sediment by Using Grid Sampling Method

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1 ENVIRONMENTAL SCIENCE Vol. 29,No. 2 Feb.,2008 1, 1, 2, 1, 1, 1 (1., ; 2. Department of Geography, National University of Ireland, Galway, Ireland) :, 10 m 1 m, 384, Al Fe Ti Mn Ba Sr Zn Cr Ni Cu 10., g kg - 1, ; Ba Sr ;Sr, Cr Ti. : ; ; ; ; :X55 ; P595 :A : (2008) Comparison of Characteristics of Heavy Metals in Different Grain Sizes of Intertidalite Sediment by Using Grid Sampling Method LIANG Tao 1, CHEN Yan 1, ZHANG Chao2sheng 2, LI Hai2tao 1, CHONG Zhong2yi 1, SONG Wen2chong 1 (11Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing , China ; 2. Department of Geography, National University of Ireland, Galway, Ireland) Abstract :384 surface sediment samples were collected from mud flat, silt flat and mud2silt flat of Bohai Bay by 1 m and 10 m interval using grid sampling method. Concentrations of Al, Fe, Ti, Mn, Ba, Sr, Zn, Cr, Ni and Cu in each sample were measured by ICP2AES. To figure out the random distribution and concentration characteristics of these heavy metals, concentration of them were compared between districts with different grain size. The results show that varieties of grain size cause the remarkable difference in the concentration of heavy metals. Total concentration of heavy metals are g kg - 1, g kg - 1 and g kg - 1 in mud flat, mud2silt flat and silt flat respectively. Majority of heavy metals inclines to concentrate in fine grained mud, while Ba and Sr have a tendency to concentrate in coast grained silt which contains more K 2 O Al 2 O 3 6SiO 2. Concentration of Sr is affected significantly by the grain size, while concentration of Cr and Ti are affected a little by the grain size. Key words :intertidalite ; grid sampling method ; heavy metals ; sediment ; grain size,,, [1 ].,. [2 ], [3 ]., [4 9 ].,,, [10, 11 ] [12 ] [13 ] [14 ], [15 ]. [11 ], 3 :,2, [11 ], : ; : : ; ( ) :(1970 ),,,,,E2mail : ac. cn

2 : (, A&B, : mm) (,C&D, : mm) (,E&F, : mm), km, [10, 11, 13 ],, 3 1 m 10 m 2 8 8, 2.,1 m 10 m 10 m. A C E 10 m,b D F 1 m. GPS., 200 m. (0 5 cm) 1 kg, 0116 mm.. 2 Fig. 2 Samples layout in study area box. SPSS Microsoft Excel Fig. 1 Location of study area HF2HNO 3 2HClO 4, IRIS Intrepid ICP2AES 10,Al Fe Ti Mn Ba Sr Zn 3 2. Cr Ni Cu.,. 113 (M), ( IΠM, IQRΠMedian),, K2S., ( m 2 3) (128 3),,,, ( IΠM) 2., 2, [16 ]. 3, m 1 m 1 2. (1),Al Fe,Ti,Mn Ba Sr, Zn Cr Ni Cu. Mn Ba, (A B) (C D) Mn Ba,( E F).,,Mn, Ba Sr. (2) 1 2 IΠM, Al Cr Ni,1 m 3

3 2 : m., 10 m 1 m. Al Cr Ni 3,,,,. ( ),, m Πmg kg - 1 Table 1 Concentrations of heavy metals in different grain2sizes of 10 m scaleπmg kg - 1 A() C() E() IΠMΠ% IΠMΠ% IΠMΠ% Al Fe Ti Mn Ba Sr Zn Cr Ni Cu m Πmg kg - 1 Table 2 Concentrations of heavy metals in different grain2sizes of 1 m scale Πmg kg - 1 B() D() F() IΠMΠ% IΠMΠ% IΠMΠ% Al Fe Ti Mn Ba Sr Zn Cr Ni Cu (3) g kg - 1,, Sr Ba. [13 ],,,,,,,. Sr Ba,. 2. 2, ,3. 3, 2,. 3 ( 2 ),,, 2.,Sr 10 3,Sr,Ba, Sr,.

4 Fig. 3 Distribution of concentrations of 10 heavy metals in all samples Al Fe Ba Mn Zn Ni Cu,,2,.,Ni Cu,2,, 2,,Cr Ti,, , 3. K2S,p 0. 05, K2S p 0105,., K2S [17 ].,K2S, 6 ( S) ( K), 3. ( E Al Mn Cu,F Ba Ni ),3 K2S ( p),3 K2S,. C Fe Cu Mn D Ni K2S,,, [18, 19 ].,,, LSD, 4. 4,, ( p < 0. 01)., 211.

5 2 : Table 3 Distribution test of concentrations of 10 heavy metals and their skewness and kurtosis K2S ( p) ( S) ( K) K2S ( p) ( S) ( K) Al Fe Ti Ba Cr A A B B C C Mn D D E E F F A A B B C C Ni D D E E F F A A B B C C Sr D D E E F F A A B B C C Zn D D E E F F A A B B C C Cu D D E E F F LSD 1) Table 4 LSD ANOVA of concentration of 10 heavy metals in samples with different grain2sizes 10 m 1 m A C A E C E B D B F D F Al Fe Ti Ba Cr Cu Mn Ni Sr Zn ) 3 ( p < 0. 05), 3 3 ( p < 0. 01) t, 5.,,,,10 m.,

6 t 1) Table 5 T2test by differences of concentration of 10 heavy metals in samples with same grain2sizes (A B) (C D) ( E F) Al Π Fe Ti Ba 3 3 Π Cr Cu Mn Π Ni Π Sr 3 3 Π Zn ) 3 ( p < 0105), 3 3 ( p < 0101),Π 10,box, (AΠCΠE,BΠDΠF ),213., (1 m 10 m),( ),211., ,Al Fe Cu Zn Mn Ni Cr,, ( ) 4 10 Fig. 4 Distribution of concentrations of 10 heavy metals in samples of different grain2sizes 2,,Al,Al, ( ) ; 2 Ba Sr, 1,,

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