Table 1.

Acute toxicity of zinc under different pH values (LC₅₀/EC₅₀) (n = 81)

pH values	LC50/EC50/(mg/L)
	Scenedesmus obliquus	Daphnia magna	Limnodrilus hoffmeisteri	Macrobrachium nipponense	Cipangopaludina cahayensis	Chironomus riparius	Pseudorasbora parva	Misgurnus anguillicaudatus	Bufo gargarizan
3	–	–	–	–	–	–	–	–	–
4	0.057 ± 0.004	0.041 ± 0.003	0.11 ± 0.014	–	0.547 ± 0.058	1.59 ± 0.158	2.84 ± 0.301	6.61 ± 0.575	2.38 ± 0.216
5	0.121 ± 0.017	0.054 ± 0.005	0.13 ± 0.016	1.12 ± 0.132	0.841 ± 0.089	4.99 ± 0.518	9.47 ± 0.919	11.90 ± 1.314	6.68 ± 0.572
6	0.158 ± 0.021	0.101 ± 0.011	0.23 ± 0.022	2.50 ± 0.217	2.263 ± 0.215	9.57 ± 1.106	13.54 ± 1.466	23.75 ± 3.154	11.11 ± 1.26
7	0.217 ± 0.023	0.233 ± 0.026	0.40 ± 0.037	2.96 ± 0.304	4.76 ± 0.451	13.71 ± 1.163	26.15 ± 3.032	35.98 ± 4.095	32.02 ± 3.81
8–11	–	–	–	–	–	–	–	–	–

Data are expressed as mean ± SD. “–” indicates that the value cannot be obtained through the calculation method