Pollutants and Water Management. Группа авторов

Cr (mg/kg) 34–234 150 97 83 26–110 25–75 Mn (mg/kg) 217–1108 1715 1075 600 460–1100 NA Cu (mg/kg) 14.6–118 55 25 25 16–110 25–50 Zn (mg/kg) 119–608 106 76 71 120–820 90–200 Pb (mg/kg) 15.6–223 23 NA 17 31–250 NA Cd (mg/kg) 0–1.6 0.55 NA 0.098 0.6–10 NA

      GRS: Ganga river sediments; GDS: Ganga delta sediment; UCC: upper continental crust; MoE: Ministry of Environment; USEPA: United States Environmental Protection Agency.

^a Singh et al. (2003).

^b Datta and Subramanian (1998).

^c McLennan (2001).

      ^d McDonald et al. (2000).

Table 2.5 Heavy metal content in various species of the Kanwar wetland.

Species	Cr (mg/kg)	Mn (mg/kg)	Cu (mg/kg)	Zn (mg/kg)	Pb (mg/kg)	Cd (mg/kg)
Hydrilla	111–164	116–148	38.5–55	9.6–12.85	133–158	0.89–0.98
Eichhornia	172–224	72–88	48–72	8.0–18	212–252	1.8–2.8
Lotus	28–46	26–42	12–31	6.0–22	114–163	1.02–1.8
Fish	22–36	12.0–26	5.3–21.5	6.24–20	146–172	0.97–1
Sorghum	58–92	12.6–23	22.5–52	4.0–15	217–264	1.01–1.26
Wheat	38.3–42	24–25.7	27.2–39	8.52–9.63	95.9–101	0.98–1.25
Maize	32–34.41	16.5–19	15.2–16.9	7.15–8.27	89–111	0.97–1.1
Rice	42–46.63	8.14–8.93	23–25.44	5.5–6.2	101–105	0.9–1.15
Permissible limit	1a	1b	30b	50b	5c	0.3c
Indian Standardd	20	NA	30	50	2.5	1.5

      NA: not available.

^a GB2762 (2012).

^b CODEX (2001).

^c FAO/WHO (2011).

^d Awashthi (2000).

Figure 2.10 Health risk index of heavy metals via cultivated crop