浊点萃取-石墨炉原子吸收光谱法测定痕量镓
GFAAS Determination of Trace Amount of Gallium with Cloud Point Extraction
摘 要
以8-羟基喹啉为络合剂,在pH 6.86磷酸盐缓冲溶液中,痕量镓(Ⅲ)与8-羟基喹啉生成配合物,加入表面活性剂Triton X-114用浊点萃取法分离富集样品中痕量镓.表面活性剂相用0.1 mol·L-1硝酸甲醇溶液0.4 mL溶解,所得溶液直接用石墨炉原子吸收光谱法进行测定.对影响浊点萃取的因素和共存离子的干扰等进行了试验并予以优化.此方法的检出限(3σ)为2 pg.应用所提出的方法测定了血清和中草药样品中镓的含量,并用标准加入法进行了方法的回收试验,测得回收率在95.6%~104.8%之间.
石墨炉原子吸收光谱法
镓
血清
中草药
Cloud point extraction
GFAAS
Gallium
Serum
Chinese herbal medicines
Abstract
Trace amount of Ga(Ⅲ) was separated from water sample by forming a coordination complex with 8-hydroxyquinoline in PBS of pH 6.86 and by cloud point extraction with Triton X-114.The surfactant phase was dispersed in 0.4 mL of a mixture of 0.1 mol·L-1 HNO3 and methanol,and Ga(Ⅲ) the solution was determined by GFAAS.Influential factors of cloud point extraction and interferences of coexisting ions were studied and optimized.Detection limit (3σ) of the method found was 2 pg.The propose method was used in the determination of Ga in serum and Chinese herbal medicine,and the values of recovery of the method found by standard addition method were in the range from 95.6%-104.8%.
中图分类号 O657.31
所属栏目 试验与研究
基金项目
收稿日期 2009/1/4
修改稿日期
网络出版日期
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备注李宏亮(1981-),男,山西宁武人,硕士研究生,主要从事理化检验工作.
引用该论文: LI Hong-liang,ZHANG Jia-ling. GFAAS Determination of Trace Amount of Gallium with Cloud Point Extraction[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(11): 1254～1256
李宏亮,张加玲. 浊点萃取-石墨炉原子吸收光谱法测定痕量镓[J]. 理化检验－化学分册, 2009, 45(11): 1254～1256
被引情况:
【1】马兵兵, "电感耦合等离子体原子发射光谱法测定铝酸钠溶液中的镓",理化检验－化学分册 52, 1350-1351(2016)
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参考文献
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【2】EINHORN L H,ROTH B J,ANSARI R,et al.Phase Ⅱ trial of vinblastine,ifosfamide and gallium combination chemotherapy in metastatic urothelial carcinoma[J].J Clin Oncol,1994(12):2271-2276．
【3】CHITAMBAR C R,ZAHIR S A,RITCH P S,et al.Evaluation of continuous-infusion gallium nitrate and hydroxyurea in combination for the treatment of refractory non-Hodgkin′s lymphoma[J].Am J Clin Oncol,1997(20):173-178．
【4】BOCKMAN R S,BOSCO B.Treatment of patients with advanced paget′s disease of bone with two cycles of gallium nitrate[J].Semin Arthritis Rheum,1994(23):268-269．
【5】LOBANOFF M C,KOZHICH A T,MULLET D I,et al.Effect of gallium nitrate on experimental autoimmune uveitis[J].Exp Eye Res,1997(65):797-801．
【6】DRBYSKI W R,UI-HAQ R,MAJEWSKI D,et al.Modulation of in vitro and in vivo T-cell responses by transferrin-gallium and gallium nitrate[J].Blood,1996(88):3056-3064．
【7】燕庆元.离子交换-原子捕集火焰原子吸收光谱法测定炼铝母液铝土矿中镓[J].理化检验-化学分册,1996,32(1):42-44．
【8】张妮娜,邹洪,邰超,等.镓的光度分析近况[J].稀有金属,2002,26(4):294-298．
【9】MARIA F S,ESTELA S C,LUIS D M.Coupling cloud point extraction to instrumental detection systems for metal analysis[J].Microchim Acta,2006(155):349-364．
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