作　　者： ; ; (等）;

机构地区： 暨南大学

出　　处： 《生态科学》 2002年第3期213-216,共4页

摘　　要： 研究了硫分族 S(Na_2SO_3)、Se(Na_2SeO_3)和 Te(Na_2TeO_3)双组分共存时,对极大螺旋藻(Spirulina maximum)和钝顶螺旋藻(S.platensis)生长的影响。结果表明,Se 和 Te 对两种螺旋藻均具有一定的毒性作用,而 Te 的毒性明显强于 Se。在一定浓度范围内,S 可不同程度的缓解 Se 和 Te 的毒性,而在较高浓度时缓解作用下降;Se 也可缓解 Te 的毒性,但在较高浓度时二者却产生毒性协同作用。S、Se 和 Te 对 S.maximum 和 S.platensis 的作用存在明显差异。对于 S.maximum,随 S(Ⅳ)浓度提高,对 Se 毒性缓解作用增强,当 S(Ⅳ)浓度达到600 mg·L^(-1)时,可完全解除600 mg·L^(-1)Se(Ⅳ)的毒性,但对 Te 的毒性缓解作用较弱。在 S.maximum 的生长后期,25 mg·L(-1) Se 可缓解 Te 的毒性:对于 S.platensis,50 mg·L^(-1)S(Ⅳ)对 Se,200 mg·L^(-1)S(Ⅳ)对 Te 的毒性的缓解作用最强,但不能完全解除600 mg·L^(-1)Se 或200 mg·L^(-1)Te 的毒性,50 mg·L^(-1)的 Se对 Te 毒性的缓解作用最大,而200 mg·L^(-1)Se 却与 Te 产生毒性协同作用。 Effects of any two dements of S(Na_2SO_3),Se(Na_2SeO_3)and Te(Na_2TeO_3)in S family on the growth of Spirulina maximum and S.platensis were investigated.It was shown that Se and Te had toxicity to two species of Spirulina,and toxicity of Te was stronger than that of Se obviously.In a specific range of concentration,sulfur could detoxificate the toxicity of Se and Te to a certain degree,but in high concentration this function declined,and Se also could detoxificate the toxicity of Te.But at the higher concentration,toxicity of Se and Te cooperated with each other.S,Se and Te could bring different effect on these two species obviously.To S.maximum,as increasing of S(Ⅳ)concentration the detoxifcation function to high concentration of Se enhanced. When S(Ⅳ)concentration reached 600 mg·L^(-1),it detoxifcated toxicity of 600 mg·L^(-1)Se(Ⅳ)completely.But detoxifcation function of S to Te was weak.At the anaphase of S.maximum growth,25 mg·L^(-1)Se could detoxifcate the toxicity of Te partly.To S. platensis,detoxifcation function of 50 mg·L^(-1)S(Ⅳ)to Se and 200 mg·L^(-1)S(Ⅳ)to Te was maximal,but it couldn't detoxifcate toxicity of 600 mg·L^(-1)Se 或 200 mg·L^(-1)Te completely.The detoxifcation function of 50 mg·L^(-1)Se to Te was maximal.But the toxicity of 200 mg·L^(-1)Se cooperated with Te.

关 键 词： 螺旋藻 生长 硫 硒 碲 有机化

领　　域： [农业科学] [农业科学] [生物学]