Pressurized Extraction of Water-Soluble Boron in Soil of Orange Grove in Tightly Closed PTFE Vessel by Micro-Wave Assisted Heating
摘 要
提出了在微波炉加热用水提取土壤中水溶态硼的处理方法,采用的辐射功率为1.36 kW,加热提取过程分先后两步:① 在0.1 MPa压力下加热90 s,② 在0.2 MPa压力下加热125 s.从某柑桔园中采得土壤样品12个,分别按回流浸提法和微波消解法提取其水溶态硼并用石墨炉原子吸收光谱法(GF-AAS)测定其含量,两种提取方法所测结果的一元回归方程的相关系数为0.991,对该回归方程斜率和截距进行t检验,表明两种方法所得的水溶态硼量之间无显著差异(置信水平95%).取同一试样5份,分别按所述方法提取其水溶态硼并按GF-AAS法测定,计算分析结果的相对标准偏差(n=5)为3.4%(微波消解法)和5.7%(回流浸提法).
Abstract
Extraction of water soluble boron in soil with water by heating in a micro-wave digestion oven was proposed. Radiation power of 1.36 kW was used and a program of heating under pressure in 2 successive steps was adopted in the procedure,i.e.: ① at 0.1 MPa for 90 s and ② at 0.2 MPa for 125 s. Twelve soil samples taken from the orange grove and their water soluble boron were extracted separately by the micro-wave digestion and refluxing methods. Correlativity of the data obtained by the 2 methods,as determined by GF-AAS,was tested,giving value of correlation coefficient of 0.991 for the linear regression equation. It was shown by the t-test for the slope and intercept of the linear regression equation that no significant difference was found between the proposed extraction method and the refluxing method under the confidence level of 95%. In the determination of soluble boron in a soil sample by GF-AAS for 5 times with treatment of sample by the 2 methods mentioned above,values of RSD′s (n=5) obtained were 3.4% (by micro-wave digestion) and 5.7% (by refluxing).
中图分类号 O657.31
所属栏目 试验与研究
基金项目 广西壮族自治区教育厅科技项目(桂教科研[2003]22号)
收稿日期 2006/10/14
修改稿日期
网络出版日期
作者单位点击查看
备注陆建军(1975-),男,四川省广安市人,硕士研究生,研究方向为分析化学.
引用该论文: LU Jian-jun,GONG Qi,PU Yu,WEI Xiao-ling,HUANG Yu-long. Pressurized Extraction of Water-Soluble Boron in Soil of Orange Grove in Tightly Closed PTFE Vessel by Micro-Wave Assisted Heating[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(3): 203~204
陆建军,龚琦,浦彧,韦小玲,黄玉龙. 微波密闭增压浸提柑桔园土壤中水溶态硼[J]. 理化检验-化学分册, 2008, 44(3): 203~204
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】邢光熹,朱建国.土壤微量元素和稀土元素化学[M].北京:科学出版社,2002:43.
【2】于天仁,王振权.土壤分析化学[M].北京:科学出版社,1988:169.
【3】吴其祥,朱树标,韦广泼,等.广西土壤硼资源普查及应用研究[J].广西农业科学,1991(1):20-26.
【4】叶正钱,魏幼璋,杨玉爱,等.甲亚胺与姜黄素测定土壤有效硼方法的对比研究[J].广东微量元素科学,1996,7:36-43.
【5】何承顺,汪军,周清,等.土壤有效硼的提取方法研究[J].山东农业大学学报,1993,24(3):190-112.
【6】陶晓秋,黄玫.烟田土壤中有效硼的测定[J].烟草科技烟草化学,2003,7:30-32.
【7】蒋予刚,顾雪梅.分析检验的质量保证和计量认证[M].上海:华东理工大学出版社,1998:244.
【2】于天仁,王振权.土壤分析化学[M].北京:科学出版社,1988:169.
【3】吴其祥,朱树标,韦广泼,等.广西土壤硼资源普查及应用研究[J].广西农业科学,1991(1):20-26.
【4】叶正钱,魏幼璋,杨玉爱,等.甲亚胺与姜黄素测定土壤有效硼方法的对比研究[J].广东微量元素科学,1996,7:36-43.
【5】何承顺,汪军,周清,等.土壤有效硼的提取方法研究[J].山东农业大学学报,1993,24(3):190-112.
【6】陶晓秋,黄玫.烟田土壤中有效硼的测定[J].烟草科技烟草化学,2003,7:30-32.
【7】蒋予刚,顾雪梅.分析检验的质量保证和计量认证[M].上海:华东理工大学出版社,1998:244.
相关信息