光照、温度对小球藻吸收⁶⁰Co,¹³⁷Cs影响的实验研究          下载免费PDF全文

肖余生  陈时华  周名江  滕文法  杨伟祥  王永元  相振峻  季祥荣 《海洋与湖沼》1985,16(4):304-309

本文研究了光照、温度对小球藻(Chlorella sp.)吸收~(60)Co和~(137)Cs以及对生长的影响。实验是在~(60)Co,~(137)Cs混合示踪条件下进行的,结果表明:(1)小球藻对~(60)Co有着很高的累积能力,而对~(137)Cs的累积能力较低;(2)光照无论对藻吸收~(60)Co还是吸收~(137)Cs的浓缩系数的影响都是全光照>半光照>黑暗;(3)温度升高藻吸收~(60)Co的浓缩系数增大;(4)小球藻在全光照、28℃时的生长最好,而在黑暗、35℃时的生长最差。  相似文献   

三角褐指藻细胞密度对累积和排出 65Zn的影响   总被引：1，自引：0，他引：1  

肖余生  滕文法  相振峻 《海洋科学》1982,6(3):22-25

本所在渤海湾污染调查中发现河口区沉积物已受到不同程度的重金属污染,如Zn在大沽河口外表层底质中的浓度已达131.5ppm~1)远高于本底值(70ppm)。渤海湾由于水质肥沃、饵料丰富,因而是我国北方海区的重要渔场之一。为研究近海河口区饵料细胞密度与污染物  相似文献   

EFFECTS OF PHOTOPERIOD AND SALINITY ON GROWTH AND UPTAKE OF ⁶⁰Co AND ¹³⁷Cs FOR CHLORELLA SP.     

王永元  肖余生  周名江  滕文法  相振峻  陈时华  杨伟祥  季祥荣 《海洋学报(英文版)》1985,4(2):289-296

The effects of three photoperiods (24 hr illumination, 12 hr illumination + 12 hr darkness and 24 hr darkness) and three salinities (20‰, 30‰ and 35‰) on the uptake of 60Co and 137Cs for Chlorella sp. and on the growth of its algae are studied. The uptake of 60Co for the algae is two orders of magnitude higher than that of 137Cs. Of factorial effects, the effect of photoperiod is most significant either on the uptake of the radionuclides or on the growth of the algae; the effect of salinity comes next in order and that of their interaction remains with the last. The uptake of the two radionuclides increases with extended photoperiod while the uptake of 137Cs declines with increasing of salinity. The growth of the algae appears to be the best under the conditions of 24 hr illumination and 30‰ salinity.  相似文献