[Rapid Determination of Dodecylmorpholine in Aqueous Solutions with UV-Vis Spectrophotometry].
Guang Pu Xue Yu Guang Pu Fen Xi
; 37(2): 509-12, 2017 Feb.
Article
em Zh
| MEDLINE
| ID: mdl-30280551
ABSTRACT
A rapid UV-Vis spectrophotometric method was proposed to determine the concentration of DMP in aqueous solutions. The linear concentration range of DMP solution at the range of 250ï½400 nm is 0.5ï½70 mmol·L(-1). At 275 nm, the linear fitting equation is A=0.030 7c+0.133 0 with a correlation of 0.980 9. The detection limitation is 9.46×10-5 mmol·L-1, the RSD (n=6) of the method were at the range of 0.100%ï½0.612%. The recovery ratio for salt solutions sample is 95%ï½104%. Temperature, pH, and coexisting K(+), Na(+), Mg(2+), Cl(-), Br(-), I(-), SO(2-)(4) ions do not affect the detection. The coexisting CO(2-)(3) and HCO(-)(3) ions can be eliminated with acidification. The results showed that the proposed method is simple in pretreatment process and has high accuracy and precision. It is a quick measurement method of DMP concentration in water solution, and can be used to measure DMP concentration in reverse flotation tail liquid and reverse flotation material pulp.
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01-internacional
Base de dados:
MEDLINE
Idioma:
Zh
Revista:
Guang Pu Xue Yu Guang Pu Fen Xi
Ano de publicação:
2017
Tipo de documento:
Article