Characterization of heavy metal contents in different parts of Undaria pinnatifida and assessment of health hazard

doi:10.3969/j.issn.1004-1524.20240780

Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (8): 1794-1804.DOI: 10.3969/j.issn.1004-1524.20240780

• Quality and Safety of Agricultural Products • Previous Articles Next Articles

Characterization of heavy metal contents in different parts of Undaria pinnatifida and assessment of health hazard

CHEN Xingxing¹^,²(), YU Wenxuan³, XU Jianwei¹^,², ZHANG Peng¹^,²^,^*()

1. Zhejiang Mariculture Research Institute, Wenzhou 325000, Zhejiang, China
2. Zhejiang Key Laboratory of Coastal Biological Germplasm Resources Conservation and Utilization, Wenzhou 325000, Zhejiang, China
3. College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Received:2024-09-03 Online:2025-08-25 Published:2025-09-03
Contact: ZHANG Peng

Abstract

Abstract:

In order to reveal the enrichment and distribution characteristics of heavy metal in different parts of Undaria pinnatifida, inductively coupled plasma mass spectrometry (ICP-MS) was employed to analyze the contents of heavy metals such as Cr, Cu, Zn, As, Cd, Hg, Pb, and Ni in the roots, stems, leaves, and sporophylls of U. pinnatifida during different growth periods. The results showed that,with the advancement of the reproductive process,the average contents of heavy metals in the U. pinnatifida followed the order of As>Zn>Cu>Cd>Ni>Cr>Pb>Hg. The contents of Cu, Zn, As, Cd, and Hg showed a trend of first increasing and then decreasing in both leaves and roots (except for Hg in leaves), while the contents of Cr, Pb, and Ni showed a continuous increase over time (except for Pb in roots). The contents of heavy metals in leaves and roots were generally higher than those in stems and sporophylls. The content of As was higher in the early growth period (March) and mature period (April), while the contents of Cr, Pb, and Ni were higher in the aging period (June). Health risk assessment indicated that the target hazard quotient (THQ) and total target hazard quotient (TTHQ) values for all elements were below 1.00, suggesting no significant health risk from consuming U. pinnatifida. However, the compound risk of heavy metal in sporophylls is relatively high, and consumers should pay attention to it when purchasing and consuming.

Key words: Undaria pinnatifida, different parts, heavy metal, health risk assessment

CLC Number:

S968.4

CHEN Xingxing, YU Wenxuan, XU Jianwei, ZHANG Peng. Characterization of heavy metal contents in different parts of Undaria pinnatifida and assessment of health hazard[J]. Acta Agriculturae Zhejiangensis, 2025, 37(8): 1794-1804.

Figures/Tables 9

References 29

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生长时期 Growth period	重金属含量Contents of heavy metals
生长时期 Growth period	Cr	Cu	Zn	As	Cd	Hg	Pb	Ni
生长初期(3月)Early growth period (March)	0.74	2.80	23.41	63.79	1.30	0.010 0	0.94	0.75
成熟期(4月)Mature period (April)	1.04	5.04	26.62	82.20	2.32	0.009 4	0.68	1.42
衰老期(6月)Aging period (June)	2.91	5.22	18.26	22.81	1.57	0.003 3	1.72	2.97
均值Average	1.57	4.35	22.76	56.27	1.73	0.007 5	1.12	1.71

生长时期 Growth period	重金属含量Contents of heavy metals
生长时期 Growth period	Cr	Cu	Zn	As	Cd	Hg	Pb	Ni
生长初期(3月)Early growth period (March)	0.74	2.80	23.41	63.79	1.30	0.010 0	0.94	0.75
成熟期(4月)Mature period (April)	1.04	5.04	26.62	82.20	2.32	0.009 4	0.68	1.42
衰老期(6月)Aging period (June)	2.91	5.22	18.26	22.81	1.57	0.003 3	1.72	2.97
均值Average	1.57	4.35	22.76	56.27	1.73	0.007 5	1.12	1.71

生长时期 Growth period	类别 Category	重金属含量Contents of heavy metals
生长时期 Growth period	类别 Category	Cr		Cu		Zn		As		Cd		Hg		Pb		Ni
3月March	范围Range		1.26~1.49		1.24~1.36		0.24~0.36		1.19~1.39		0.02~0.03		0.007		0.02~0.03		0.55~0.56
	均值Mean value		1.34		1.28		0.28		1.28		0.02		0.007		0.03		0.55
4月April	范围Range		1.15~1.32		1.15~1.30		0.21~0.36		1.04~1.20		0.03~0.04		0.007		0.02~0.03		0.40~0.60
	均值Mean value		1.25		1.22		0.28		1.10		0.03		0.007		0.02		0.49
6月June	范围Range		1.41~1.66		1.57~1.62		0.29~0.40		1.68~2.13		0.04~0.06		0.007		0.03~0.05		0.68~0.76
	均值Mean value		1.53		1.60		0.35		1.97		0.05		0.007		0.04		0.72
海水标准	一类Class 1		≤50.00		≤5.00		≤20.00		≤20.00		≤1.00		≤0.05		≤1.00		≤5.00
Standard of	二类Class 2		≤100.00		≤10.00		≤50.00		≤30.00		≤5.00		≤0.20		≤5.00		≤10.00
sea water

生长时期 Growth period	类别 Category	重金属含量Contents of heavy metals
生长时期 Growth period	类别 Category	Cr		Cu		Zn		As		Cd		Hg		Pb		Ni
3月March	范围Range		1.26~1.49		1.24~1.36		0.24~0.36		1.19~1.39		0.02~0.03		0.007		0.02~0.03		0.55~0.56
	均值Mean value		1.34		1.28		0.28		1.28		0.02		0.007		0.03		0.55
4月April	范围Range		1.15~1.32		1.15~1.30		0.21~0.36		1.04~1.20		0.03~0.04		0.007		0.02~0.03		0.40~0.60
	均值Mean value		1.25		1.22		0.28		1.10		0.03		0.007		0.02		0.49
6月June	范围Range		1.41~1.66		1.57~1.62		0.29~0.40		1.68~2.13		0.04~0.06		0.007		0.03~0.05		0.68~0.76
	均值Mean value		1.53		1.60		0.35		1.97		0.05		0.007		0.04		0.72
海水标准	一类Class 1		≤50.00		≤5.00		≤20.00		≤20.00		≤1.00		≤0.05		≤1.00		≤5.00
Standard of	二类Class 2		≤100.00		≤10.00		≤50.00		≤30.00		≤5.00		≤0.20		≤5.00		≤10.00
sea water

生长时期 Growth period	富集系数Bioconcentration factor
生长时期 Growth period	Cr	Cu	Zn	As	Cd	Hg	Pb	Ni
3月March	555	2 193	82 923	49 937	57 234	1 401	36 838	1 360
4月April	837	4 149	96 660	74 844	67 258	1 344	32 789	2 902
6月June	1 900	3 255	52 634	11 584	30 762	474	48 889	4 098
均值Mean value	1 097	3 199	77 406	45 455	51 751	1 073	39 506	2 786

Characterization of heavy metal contents in different parts of Undaria pinnatifida and assessment of health hazard

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生长时期-部位 Growth period-parts	PC1	PC2	PC3	综合得分 Comprehensive scores
3月-叶March-leaf	-1.340	1.865	0.593	-0.654
4月-叶April-leaf	-0.840	2.551	0.203	-0.210
6月-叶June-leaf	1.904	1.299	0.232	1.649
3月-茎March-stem	-0.558	0.344	-0.093	-0.372
4月-茎April-stem	-0.380	0.517	-0.016	-0.205
6月-茎June-stem	1.065	0.801	0.190	0.940
3月-根March-root	0.590	1.259	0.095	0.648
4月-根April-root	0.339	2.476	-0.015	0.640
6月-根June-root	2.380	1.824	0.959	2.085
4月-孢子叶April-sporophyll	-0.666	1.996	-0.594	-0.243
6月-孢子叶June-sporophyll	2.023	1.755	-0.696	1.768
贡献率Contribution rate/%	48.867	28.606	11.357
累计贡献率Cumulative contribution rate/%	48.867	77.473	88.830

生长时期 Growth period	单一重金属目标危害系数 Target hazard quotient(THQ)								总目标危害系数 Total target hazard quotient(TTHQ)
生长时期 Growth period	Cr	Cu	Zn	As	Cd	Hg	Pb	Ni	总目标危害系数 Total target hazard quotient(TTHQ)
3月March	0.003 3	0.001 0	0.001 1	0.290 0	0.018 0	0.001 3	0.003 2	0.000 5	0.320 0
4月April	0.004 7	0.001 7	0.001 2	0.370 0	0.031 0	0.001 3	0.002 3	0.0009	0.410 0
6月June	0.013 0	0.001 8	0.001 0	0.100 0	0.021 0	0.000 5	0.005 8	0.002 0	0.150 0
均值Mean value	0.007 1	0.001 5	0.001 0	0.250 0	0.023 0	0.001 0	0.003 8	0.001 2	0.290 0

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