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首页> 外文期刊>Nature reviews Cancer >The Study of Phosphate Release from Artificial Sediment into Water Body Using Diffusive Gradient in Thin Film (DGT) Device in Oxic Condition
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The Study of Phosphate Release from Artificial Sediment into Water Body Using Diffusive Gradient in Thin Film (DGT) Device in Oxic Condition

机译：在氧化膜（DGT）装置中使用薄膜（DGT）装置中磷酸盐从人工沉积物中磷释放到水体中的研究

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The phenomenon of phosphate release in sediments into water bodies under oxic environment has been investigated using the Diffusive Gradient in Thin Film (DGT) technique. This research consists of several stages: polymer synthesis and DGT probe assembly, sediment sampling, DGT deployment in oxic conditions, and phosphate analysis from DGT adsorption results. Acrylamide polymer was successfully synthesized with a composition of 15% acrylamide; N-N'-methylenebisacrylamide 0.1% and ferrihydrite as binding gels. DGT probes were assembled by placing a 16 x 3.2 cm polyacrylamide gel, binding gels and filter membranes on the DGT probes. The sediment sample was taken from the Bogor Botanical Gardens at the coordinates 6 degrees 36'00.6" S; 106 degrees 47'51.0" E. The DGT probe was placed in sediment samples for 1, 3 and 7 days in oxic conditions. After the prescribed time, the binding gel was removed and cut every 1 cm depth, then eluted using 0.25 M H2SO4 and the phosphate concentration was measured using spectrophotometry method. The results showed that the phosphate concentration tends to be higher with the increasing incubation time and depth. Maximum CDGT phosphate released on day 1, day 3 and day 7 were 1.00 mu g/L at a depth of 14 cm, 6.61 mu g/L at a depth of 14 cm, and 20.92 mu g/L at a depth of 11 cm, respectively. This ensures that the phosphate in water bodies comes from biogeochemical processes that occur in sediments and is successfully measured through DGT techniques.
机译：利用薄膜（DGT）技术的扩散梯度研究了氧化物沉积物沉积物中磷酸盐释放到水体中的现象。该研究包括多个阶段：聚合物合成和DGT探针组件，沉积物采样，氧化条件下的DGT部署，以及来自DGT吸附结果的磷酸盐分析。成功合成丙烯酰胺聚合物，其组合物为15％丙烯酰胺; N-N'-二甲苯二丙烯酰胺0.1％和Ferrihydrite作为结合凝胶。通过将16×3.2cm聚丙烯酰胺凝胶，结合凝胶和过滤膜放置在DGT探针上来组装DGT探针。沉积物样品从坐标66'00.6“S; 106度47'51.0”E中取出茂物植物园; 106度47'51.0“。将DGT探针置于沉积物样品中，在氧化条件下为1,3和7天。在规定的时间后，除去结合凝胶切每1厘米深，然后用0.25M的H 2 SO 4洗脱并用分光光度法测定磷酸盐浓度。结果表明，随着孵育时间和深度的增加，磷酸盐浓度趋于更高。在第1天，第3天和第7天释放的最大CDGT磷酸盐在深度为14厘米，深度为14厘米的深度为1.00μg/ L，深度为14厘米，深度为11厘米的深度为14厘米，2.92μg/升， 分别。这确保了水体中的磷酸盐来自沉积物中发生的生物地球化学过程，并通过DGT技术成功测量。

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