active alkali sulfur

Changes in total sulfur and available sulfur in soils under different land use in the Sanjiang Plain were analyzed to explore characters of the evolution of sulfur content in the soils.

通过分析三江平原不同土地利用方式下土壤总硫、有效硫含量的变化,探明土壤硫含量演变特征。

Two cores and 78 samples were taken and studied with high-resolution to total sulfur, available sulfur, TOC and pH in different grain size sediments.

选取霍林河下游向海沼泽湿地为研究对象,采用重力沉积芯采样钻钻孔采样方法,采集了2个沉积柱芯共78个样品,对不同粒级沉积物全硫与有效硫及TOC,pH在剖面中的分布进行高分辨率研究。

So it is difficult to give a reasonable estimate method for the available sulfur in the soil.

土壤中各种形态的硫是随时间而不断变化的，有些是对植物直接吸收有效的，有些是对植物生长中期或长期有效的，所以合理评价土壤有效硫状况是很困难的。

The results showed that the contents of available sulphur of 40% of the given samples were low.

对河南３１个县（市）５４个点的土壤硫素的测定结果表明，有４０％的点次有效硫含量较低。

Investigation of 1105 soil samples in plough horizon in Shandong Province showed that the average available sulphur content is 47.

通过对全省不同土壤类型１１０５个耕层土壤样本的调查分析，明确了全省土壤有效硫含量平均为４７３１ｍｇｋｇ土，最低２１９ｍｇｋｇ土，最高７９９ｍｇｋｇ土，不同土类有效硫含量高低依次为潮土＞砂姜黑土＞盐土＞褐土＞棕壤＞粗骨土。

This paper mainly described the method to determine available sulphur in soil and points for attention.

本文主要介绍了土壤中有效硫的测定方法和测定中的注意事项。

Determining effective sulfur in soil by ICP-AES uses leaching agents Ca(H2PO4)2-2mol/LHAc for intermediate and acid soil and 5mol/LNaHCO3 for alkaline soil.

采用电感耦合等离子体发射光谱法测定土壤中有效硫,浸提剂分别为:Ca(H2PO4)2-2mol/LHAc(中酸性土壤有效硫),5mol/LNaHCO3(碱性土壤有效硫)。

The uncertainty of determination of effective sulfur content in pyrites and concentrate by combustion neutralization method was evaluated.

对燃烧中和法测定硫铁矿和硫精矿中有效硫含量的不确定度进行了评定,分析测量不确定度的主要来源,包括仪器的精密度引入的不确定度,标准物质(KHP)纯度的不确定度,试样称量的不确定度和测量重复性的不确定度等。

Pyrites and concentrate--Determination of effective sulfur content--Combustion neutralization method

GB/T2462-1996硫铁矿和硫精矿中有效硫含量的测定燃烧中和法

Evaluation of the Uncertainty of Determination of Effective Sulfur Content in Pyrites and Concentrate by Combustion Neutralization Method

燃烧中和法测定硫铁矿和硫精矿中有效硫含量不确定度的评定

Analysis on the contents of effective sulfur and boron in plough layer soil in major parts of Henan province

河南省主要土类耕层有效硫和有效硼含量分析

Soil available sulfur accumulation in a long-term N,P and organic fertilizer experiment under the different cropping systems

长期施用氮、磷和有机肥对不同种植体系土壤有效硫累积的影响

The content of soil available Sulphur was decreased after harvesting cole and radish.

另外种植油菜和四季萝卜的土壤，有效硫的含量较种植前略下降；

The analysis of the validity of the Na_2S_2O_3;

对硫代硫酸钠标准溶液有效期的分析

Application of Efficient CTS Sweetening Agent in Removing Organic Sulfur from LPG

CTS型高效脱硫剂在液化气脱有机硫中的应用

Ammonium sulfate and potassium sulfate were used as sources of N and K because these sources are more efficient in these soil conditions.

用硫酸铵和硫酸钾作氮和钾肥源因其对该土壤条件更有效。

Objective: To determine the effect of sulphur fumigation on the effective components of lily.

目的：考察硫熏干燥法对百合有效成分的影响。

Composition of Soil Sulphur and Its Availability to Plants;

土壤中硫的组成及其对植物的有效性的研究

Four effective measures of improving RFCC desulphur;

改善重油催化裂化脱硫的四条有效措施

The Influence of sulphur fumigation on allantion of Dioscores OppositaThunb

硫磺熏蒸对山药中有效成分尿囊素的影响

Mechanism of Karst Development in Sulphate Rocks andlts Main Geo-environmental Impacts

硫酸盐岩岩溶发育机理与有关地质环境效应

Detection of Related Substances of Apramycin Sulphate by HPLC

高效液相色谱法测定硫酸安普霉素有关物质

Effect of 50% sulfuryl fluoride gas preparation for killing pest

50%硫酰氟气体制剂对有害生物杀灭效果的研究

Conclusion The expectant therapy with Epsom salt for placentaprevia has a better resultand is more efficient.

结论硫酸镁用于前置胎盘期待疗法效果好,有效率高。

Both these mechanisms mean that sulphate has a cooling effect.

这两种效应都意味着硫酸化合物有使气候变凉的效应。

The Recovery of Sulfur and the Separatica of Organic Sulfur from Spent Desulfurizer;

废脱硫剂中有机硫的分离及硫的回收