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首页> 外文期刊>Plant and Soil >Factors controlling equilibrium boron (B) concentration in nutrient solution buffered with B-specific resin (Amberlite IRA-743).
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Factors controlling equilibrium boron (B) concentration in nutrient solution buffered with B-specific resin (Amberlite IRA-743).

机译：控制用B特异性树脂（Amberlite IRA-743）缓冲的营养液中平衡硼（B）浓度的因素。

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摘要

Factors determining equilibrium B concentrations in nutrient solution buffered with the B-loaded resin, including the B loading of the resin, pH in the nutrient solution and B removal from the solution, were evaluated. The equilibrium B concentrations in nutrient solution were determined by both the amount of B sorbed by the resin and the solution pH. At pH 6.05±0.05, the relationship between the resin B content and equilibrium B concentration in the nutrient solution is closely described by the equation: Y = 18.8 X1.457 [where, Y = equilibrium B concentration (鍹) in nutrient solution and X = B content of the resin (mg B g-1 moist resin)]. However, at a given resin B content, lowering solution pH from 7 to 4 significantly increased B concentrations in solution through the release of B from the solid phase of the resin beads. The B-loaded resin was capable of maintaining stable B concentrations in the nutrient solutions, ranging from deficient to marginally adequate B concentrations for dicotyledons. In conclusion, B concentrations ranging from 0.05 to 11μM, were buffered for 5 days with the resin loaded with 0.004-0.691 mg B g-1 moist resin in the nutrient solution. Precise pH control in the nutrient solution is critical for the success of a B-buffered solution culture study.
机译：评价了决定用B负荷树脂缓冲的营养液中平衡B浓度的因素，包括树脂的B负荷，营养液中的pH值和从溶液中去除B的浓度。营养液中的平衡B浓度由树脂吸收的B量和溶液的pH值决定。在pH 6.05±0.05时，营养液中树脂B含量与平衡B浓度之间的关系由以下方程式密切描述：Y = 18.8 X1.457 [其中，Y =营养液中平衡B浓度（鍹）和X ＝树脂中的B含量（mg B g-1湿性树脂）。然而，在给定的树脂B含量下，通过将B从树脂珠粒的固相中释放出来，将溶液的pH从7降低到4会显着增加溶液中的B浓度。含B的树脂能够在营养液中保持稳定的B浓度，范围从双子叶植物的不足B浓度到勉强足够的B浓度。总之，在营养溶液中，将浓度为0.004-0.691 mg B g-1湿润树脂的树脂缓冲在0.05至11μM的B浓度下5天。营养液中精确的pH控制对于B缓冲液培养研究的成功至关重要。

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