Migration Of Heavy Metals In The Plants During Their Growth

This experiment in the growth of the bean imitation conditions, planting in thelaboratory, this plant under natural conditions in the growth and the naturalenvironment destroyed the growth of plants, the four beneficial elements and threekinds of metal to metal elements bean harmful plants of the influence of the growthprocess.By using the orthogonal experiment method to design the plan, with the analysisof variance to optimize experimental conditions, use microwave digestion method todeal with soybean and soil. With ICP-AES operation and the soybean in soil samplesFe, Zn, Se, Ge, Pb, Hg, Cd seven metal element's content. This method is rapid, littleenvironmental pollution, high sensitivity, the simple, accuracy, and can also determinea variety of metal elements. The relative standard deviation method are less than3.22%, and the recoveries are in the range of94.27~102.4%.In the growth of the bean imitation way, in laboratory planting, every15dayspicking a, use microwave digestion to digest processing, through the ICP-AESmethod, track and analyze soybean plants metal elements in change of comparativeanalysis to join beneficial metal elements and harmful to the influence of the metalelements in plants. This experiment with the natural growth rule, only add to plant ametal element solution, the study found that, the metal elements in plants to absorb all,different absorption of different elements, Fe, Zn uptake of metal elements in larger,Se, Ge element second, the absorption of harmful metal elements is weak, and notconducive to the growth of plant. Metal elements to large amount, it will influence theplants, such as Fe elements join is more than80mL, the survival rate of the plant isvery low, Cd, Pb, Hg elements of the addition amount more than60mL, seeds will bedestroyed, plant seedlings most deaths from the bud, the branch of the branches andleaves and plants survived sparse, thin roots.Investigate the growth of plants in the process, heavy metal element with plantgrowth process, in the plant body all have accumulated, the whole with plant growthprocess, heavy metals also moved to of fruit. With the food chain, will eventually beour human body absorption. Metal element migration is good, can improve our healthto eat the curative effect role, and harmful of metal elements migration, will be on the healthy body have a serious effect. So in the next crop planting, and on the basis ofthe metal migration function, we can in the cultivation of crops in the process that weneed to join the nutrition elements, in order to achieve the goal of what we need. Thisrequires us to protect the environment, to prevent contamination in soil and waterresources.