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应用微核技术监测海水诱变剂的初步实验 总被引：2，自引：0，他引：2
工业化和环境污染总是并行发生的。如何在工业化过程中尽量避免环境污染是大家关心的问题。在研究这个问题中，建立有效的生物测定法，来监测环境污染，防止污染物影响人类健康是很有意义的。 相似文献
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前言 目前,在青岛地区从国外引进的大米草(Spartina)有S.englica和S.paten。它们具有较强的耐盐性,甚至在海水中也能生长,但一般都适宜生长在潮间带,有护堤作用,又可以作为海鸟和其他动物的栖息地。它们的种子很小,没有什么经济价值,但其茎和叶是牛羊等动物的饲料,且由于茎叶纤维的质地良好,故可作为造纸原料。 相似文献
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随着工业的发展,环境污染愈来愈成为严重问题。青岛也不例外。环境污染物对人和其他动物有各种伤害,其中遗传伤害是最值得考虑的问题。这因为遗传物质所受到的伤害,不仅表示体细胞可能受到伤害,而且这种伤害也会通过生殖作用而扩散和累积,遗害子孙后代。因此随时监测环境污染,保持环境的良好质量,已成为重要的事。 相似文献
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Experiments with Lamnaria japonica were conducted in Meidao Bay and Pier Bay,Qingdao,China,Nitrogen-starved plants were fertilized intermittently with 7.1 mM NH4-N solution for 1 hour at 3 day intervals, after which chlorophyll a, fucoxanthin, chlorophyll c and B-carotene contents were analyzed. Photosynthetic and growth rates of plants and nitrogen content of seawater were determined. Photosynthetic and growth rates of the nitrogen-enriched plants were higher than those of the controls, and their contents of chlorophyll a, fucoxanthin, chlorophyll c and B-carotene were 1.65,0.67,0.33 and 0.06 mg . dm-2 respectively, or 2.46,2.03,1.86 and 1.81 times those of the controls. The ratio of fiicoxanthin to chlorophyll a in nitrogen-enriched plants was lower than that of the controls. Normal growth rate of the plants (2 cm.day-1 in length)were reached when the chlorophyll a content exceeded 0.1 mg.g-1 fresh wt., indicating that chlorophyll a content can serve as an indicator of normal growth.Experimental resul 相似文献
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Cadmium flux through a lab food chain (Phaeodactylum tricornutum Bohlin- Penaeus orientate Kishinouye- Hexagrammos otakii Jordan et Starks) and its genotoxicity were investigated. The results are as follows:1. High doses of cadmium (>0.003 mol / L) induced flocculation and quick precipitation of Phaeodactylum tricornutum; lower doses of cadmium could be adsorbed on and absorbed by P. tricornutum without delaying its growth. Cadmium concentrations in algae increased with dosage, and cadmium ions removed from the medium were in proportion to dosage. In vivo chelation and organizable combination of absorbed cadmium ions by metabolites of P. tricornutum can be considered as bio-detoxification.2. Cadmium concentration decreased in the transfers from P. tricornutum to P. orientalis and from the latter to H. otakii. Transfer coefficient of cadmium in the first flux was 66.6% and 29.9% in the second. Results of t tests showed that mutagenicity of ashed internal organs of experimental prawns was significantly hi 相似文献
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随着工业的发展，环境污染愈来愈成为严重问题。青岛也不例外。环境污染物对人和其他动物有各种伤害，其中遗传伤害是最值得考虑的问题。这因为遗传物质所受到的伤害，不仅表示体细胞可能受到伤害，而且这种伤害也会通过生殖作用而扩散和累积，遗害子孙后代。 相似文献