主题：【求助】求外文文献5篇，不好意识，校网不能用。谢了

Akita, S., Rovira, M., Sastre, A.M., Hyodo, N., and Takeuchi, H., 1997, “Coacervation Characteristics of Nonionic Surfactants and Their Application to Metal Separation”,Proceedings of International Symposium on Liquid-Liquid Two-phase Flow and Transport Phenomena, Antalya, Turkey, 3th –7th Nov. 1997, pp. 371-380.

Marcia Andreia Mesquita da Silva, Vera Lucia Azzolin Frescura, Adilson Jose Curtius.Determination of Trace Elements in Water Samples by Ultrasonic Nebulization Inductively Coupled Plasma Mass Spectrometry after Cloud Point Extraction[J]. Spectrochimica Acta Part B ,2000(55) :803-813.

Tabrizi, Ahad Bavili.Development of a cloud point extraction-spectrofluorimetric method for trace copper(II) determination in water samples and parenteral solutions.Journal of Hazardous Materials. 139(2). JAN 10 2007. 260-264.

BEIBEI CHEN ; BIN HU ; MAN HE ;Cloud point extraction combined with electrothermal vaporization inductively coupled plasma mass spectrometry for the speciation of inorganic selenium in environmental water samples.Rapid communications in mass spectrometry.2006, vol. 20, no19, pp. 2894-2900

Brown, K M : Arthur, J R .Selenium, selenoproteins and human health: a review.Public-Health-Nutr. 2001 Apr; 4(2B): 593