◇◇新语丝(www.xys.org)(xys2.dxiong.com)(www.xysforum.org)(xys-reader.org)◇◇   举报浙江大学倪吾钟等人一稿二发英文论文   浙江大学倪吾钟、杨肖娥、龙新宪于2002年发表的2篇论文,第二、三作者 排名调换,论文题目不一样,但是内容完全一样,属于一稿二发中比较聪明的。 供大家参考!   Differences of cadmium absorption and accumulation in selected vegetable crops   Author(s): Ni WZ, Yang XE, Long XX   Source: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA Volume: 14 Issue: 3 Pages: 399-405 Published: JUL 2002   Abstract: A pot experiment and a sandy culture experiment grown with three vegetable crops of Chinese cabbage ( B. chinensis L., cv. Zao-Shu 5), winter greens ( B. var. rosularis Tsen et Lee, cv. Shang-Hai-Qing) and celery (A. graveolens L. var. dulce DC., cv. Qing-Qin) were conducted, respectively. The initial soil and four incubated soils with different extractable Cd (0.15, 0.89, 1.38, 1.84 and 2.30 mg Cd/kg soil) were used for the pot experiment. Five treatments were designed (0, 0.0625, 0.125, 0.250 and 0.500 mg Cd/L) in nutrient solution in the sandy culture experiment. Each treatment in pot and sandy culture experiments was trireplicated. The objectives of the study were to examine Cd accumulation in edible parts of selected vegetable crops, its correlation with Cd concentrations in vegetable garden soil or in nutrient solution, and evaluate the criteria of Cd pollution in vegetable garden soil and in nutrient solution based on the hygienic limit of Cd in vegetables. Cadmium concentrations in edible parts of the three selected vegetable crops were as follows: 0.01-0.15 mg/kg fresh weight for Chinese cabbage, 0.02-0.17 mg/kg fresh weight for winter greens, and 0.02-0.24 mg/kg fresh weight for celery in the pot experiment, and 0.1-0.4 mg/kg fresh weight for Chinese cabbage, 0.1-1.4 mg/kg fresh weight for winter greens, and 0.05-0.5 mg/kg fresh weight for celery in the pot experiment( except no-Cd treatment). The order of the three test vegetable crops for cadmium accumulation in the edible parts was celery > winter greens > Chinese cabbage in both the pot experiment and the sandy culture experiment. Cadmium accumulation in edible parts or roots of the vegetable crops increased with increasing of cadmium concentration in the medium (soil or nutrient solution). And cadmium concentrations in edible parts of the test vegetable crops were significantly linearly related to the Cd levels in the growth media (soil and nutrient solution). Based on the regression equations established and the limit of cadmium concentration in vegetable products, the thresholds of Cd concentration in the growth medium evaluated was as follows: 0.5 mg/kg soil of extractable Cd for soil and 0.02 mg/L for nutrient solution. The high capacity for cadmium accumulation in the edible parts of different vegetable crops together with the absence of visual symptoms implies a potential danger for humans.   Studies on the criteria of cadmium pollution in growth media of vegetable crops based on the hygienic limit of cadmium in food   Author(s): Ni WZ, Long XX, Yang XE   Source: JOURNAL OF PLANT NUTRITION Volume: 25 Issue: 5 Pages: 957-968 Published: 2002   Abstract: A pot experiment and a sandy culture experiment grown with three vegetable crops of Chinese cabbage (B. chinensis L. cv. Zao-Shu 5), winter greens (B. var. rosularis Tsen et Lee cv. Shang-Hai-Qing), and celery (A. graveolens L. var. dulce DC. cv. Qing-Qin) were conducted, respectively. The initial soil and four incubated soils with different extractable cadmium (Cd) levels (0.15, 0.89, 1.38, 1.84, and 2.30 mg Cd kg(-1) soil) were used for the pot experiment. Five treatments were designed (0, 0.0625, 0.125, 0.250, and 0.500 mg Cd L-1) in nutrient solution in the sandy culture experiment. Each treatment in both pot and sandy culture experiments was trireplicated. The objectives of the study were to examine Cd accumulation in edible parts of selected vegetable crops, its correlation with Cd concentrations in vegetable garden soil or in nutrient solution, and to evaluate the criteria of Cd pollution in vegetable garden soil and in nutrient solution based on the hygienic limit of Cd in vegetables. Cadmium concentrations in edible parts of the thr-ce selected vegetable crops were as follows: 0.01-0.15 mg kg(-1) fresh weight for Chinese cabbage, 0.02-0.17 mg kg(-1) fresh weight for winter greens, and 0.02-0.24 mg kg(-1) fresh weight for celery in the pot experiment, and 0.1-0.4 mg kg(-1) fresh weight for Chinese cabbage, 0.1-1.4 mg kg(-1) fresh weight for winter greens, and 0.05-0.5 mg kg(-1) fresh weight for celery in the pot experiment (except no-Cd treatment). Cadmium accumulation in edible parts or roots of the vegetable crops increased with increasing of cadmium concentration in the medium (soil or nutrient solution); and cadmium concentrations in edible parts of the test vegetable crops were significantly linearly related to the Cd levels in the growth media (soil and nutrient solution). Based on the regression equations established and the limit of cadmium concentration in vegetable products, the thresholds of Cd concentration in the growth medium evaluated was as follows: 0.5 mg kg(-1) soil of extractable Cd for soil and 0.02 mg L-1 for nutrient solution. The hi-fi capacity for cadmium accumulation in the edible parts of different vegetable crops together with the absence of visual symptoms implies a potential danger for humans. (XYS20080724) ◇◇新语丝(www.xys.org)(xys2.dxiong.com)(www.xysforum.org)(xys-reader.org)◇◇