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本文就表面活性剂-磺基水杨酸对镱在乙炔-空气火焰中的高增敏作用进行了研究,结果表明,在十二烷基硫酸钠(SDS)与磺基水杨酸(SSA)共存时。镱的灵敏度增高50倍,其它稀土元素和一些阴离子对Yb的干扰得到了有效的抑制,对硫酸根和磷酸根尤其明显,同时也研究了该体系的增敏机理。 在Yb-SDS-SSA体系中,镱的检出限为0.031 μg/mL,在0.050～2.0μg/mL镱的浓度范围内,其相对标准偏差为3.0％。
In this paper, the effect of surfactant-sulfosalicylic acid on the sensitization of ytterbium in acetylene-air flame was studied. The results showed that when SDS and sulfosalicylic acid (SSA) coexist . Ytterbium sensitivity increased by 50 times, other rare earth elements and some anion Yb interference was effectively inhibited, especially for sulfate and phosphate, but also studied the sensitization mechanism of the system. In Yb-SDS-SSA system, the detection limit of ytterbium was 0.031 μg / mL, and its relative standard deviation was 3.0% in the range of 0.050 ~ 2.0 μg / mL ytterbium.