Analysis of metals and metalloids present in Sri Lankan dried seaweeds and assessing the possibility of health impact to general consumption patterns

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Table 3

Concentration in mg kg⁻¹of metals and metalloids in three varieties of seaweeds in different coastal areas of Sri Lanka − North East Monsoon Season.

Seaweed	Site	Metal concentration (mg / kg)
Seaweed	Site
		As	Cu	Cr	Ni	Cd	Pb	Hg
Chlorophyta	01	ND	3.1 ± 1.2^a	33.5 ± 11.1^a	7.5 ± 2.4^a	3.8 ± 0.8^a	ND	ND
	02	ND	3.9 ± 1.0^a	35.8 ± 9.9^aa	10.5 ± 1.8^ab	4.2 ±1.2^ab	ND	ND
	03	7.5 ± 2.1^a	3.8 ± 1.7^a	66.4 ± 7.2^b	8.5 ± 2.0^a	6.4 ± 2.1^a	ND	ND
	04	ND	4.1 ± 2.5^a	61.4 ± 8.6^c	9.1 ± 1.3^ad	6.8 ± 0.9^ad	ND	ND
Rhodophyta	01	1.0 ± 0.5^ba	5.4 ± 1.8^a	68.2 ± 9.8^db	8.2 ± 1.7^a	5.6 ± 1.5^a	ND	ND
	02	ND	4.8 ± 0.6^a	71.9 ± 7.6^ef	7.7 ± 1.1^a	5.7 ± 1.7^a	ND	ND
	03	5.9 ± 1.0^ab	6.7 ± 2.1^a	75.4 ± 11.9^fe	7.4 ± 1.4^a	5.1 ± 2.7^a	ND	ND
	04	4.3 ± 2.1^a	7.0 ± 0.7^a	77.2 ± 10.6^gd	7.4 ± 1.9^a	4.9 ± 1.3^a	ND	ND
Phaeophyta	01	ND	4.7 ± 1.2^a	57.6 ± 10.2^a	6.2 ± 2.4^a	4.1 ± 1.6^a	ND	ND
	02	ND	5.2 ± 2.0^a	72.1 ± 11.7^hc	3.5 ± 2.0^ac	5.0 ± 2.4^ace	ND	ND
	03	6.2 ± 1.7^ac	4.9 ± 2.0^a	59.2 ± 10.3ⁱ	7.3 ± 2.8^a	4.3 ± 2.1^a	ND	ND
	04	ND	5.1 ± 0.3^a	66.6 ± 12.4^j	8.2 ± 2.4^a	4.7 ± 1.9^a	ND	ND

** Mean ± Standard deviation of triplicates of samples; significant difference among columns in Tables 2 and 3 separately, were denoted by different superscripts (p < 0.05). Means within the same column that have no common letters denote statistically significant differences among the figures concerned.

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