It was found that emulsifier OP could enhance the potential stripping response of zinc,cadimum and lead in the media of 0.017 mol/L H2 SO4-HNO3.When the deposit time is 60 seconds at-1.50 V( vs·SCE),the detection limit of zinc,cadimum and lead is 0.013μg/20 mL,0.016μg/20 mL and 0.02μg/20 mL,respectively.
Methods Cadmium in river water was separated and enriched with sulfhydryl cotton, in the presence of 4×10~3 % emulsifier OP and H3PO4-NaH2PO4 water solution, Victoria Pure Blue BO reacted with [CdI4]2- forming an ionic-associated complex and the color of the solution changed from yellow to pure blue, and the content of trace cadmium in river water was determined by spectrophotometry.
Micro amounts of Al in tin bronze are determined with spectrophotometry using CAS as the developer in the presence of emulsifier,OP,and cation surfactant,CTMAB.The suitable acidity is in the range of pH 5.5～6.5,Cu is masked with Na2S2O7,coexistence of other metallic ions in tin bronze does not interfere the determination of Al.
The reaction of mercury ( I ) with excess of thiocyanate forms the anionic complex [Hg(SCN)4]2- in acid solution, then reaction of which with crystal vioet (CV) can be forms the association complex (CV)2[Hg(SCN)4] in the presence of grum arabic and emulgent OP, and the colour of the solution changes.
The spectrophotmetric determination of copper in the presence of emulgent OP using sodium diethyldithiocarbamate has been investigated, The experiment shows the stability of yellow complex of copper ( Ⅱ ) with sodium diethyldithiocarbamate in the presence OP in the ammonia buffer solution ( pH 8.0—9.5) is 2hr.
In a Britton-Robinson buffer solution at pH(2.9) and in the presence of emulgent OP,DBM-arsenazo and bovine serum albumin form a compound with a maximum absorption wavelength at 530 nm. The apparent molar absorptivity of the compound is ε_(max)=(5.73)×10~5 L/(mol·cm). The linear range of bovine serum albumin is 10～(75.0) mg/L.
The influences of seven non-ionic surfactants emulsifying agent OP, polyvinyl alcohols(PVA), Tween-20, Tween-80, polyvinyl pyrrolidon(PVP), TritonN-101 and Triton X-305 on The solubility increasing, absorbance and absorption spectrum of basic dye-phosphomolybdenum blue ion-associated substance are investigated.
Mixed color reagent of xylenol orange and phenanthroline were used as a selective chromogenic system in pH2.8 with the presence of Emulsifying agent OP,The application of H-point standard additions method to the simultaneous determination of Fe(Ⅱ)and Fe(Ⅲ)was studied.
On the basis of the analysis of foam characters of a surface activator,the low foam alkali resistance permeation agent HT 95 as a low foam composition is synthesised,and a new type of low foam scouring agent is prepared by use of the complex of emulsifying agent OP 10 and ABS as a high foam composition.
在分析了表面活性剂泡沫特性的基础上，合成了作为低泡组分的低泡耐碱渗透剂 H T95，并以乳化剂 O P10 和烷基苯磺酸钠的复配物为高泡组分，配制成一种新型低泡精练剂。
A new spect ophotometric method for determination of cationic surfactants (CS ) was developed, on the based the ion-associating reactions of acidic xan-thene dye (H2R) such as erythrosin and eosin Y with cationic surfactans in aqueous solution in the presence of emulsifying agent op.
Conclusion:1%concentrations of TritonX-100,NP-40,Teween-20 or emulsion OP all give efficient results without inhbiting PCR reaction,which are the splitting agents for Bacillus tuberclosis detection in clinial PCR technigue.
A new kinetic spectrophotometric method for the determination of trace amount titanium (Ⅳ) has been developed, based on the inhibitory effect of trace amount titanium (Ⅳ) on oxidation of dimethyl yellow (DMY) with potassium bromate in 0.08 mol/L sulphuric acid solution and in the presence of emulsion OP. The detection limit is 0.21 μg/L and the linear range is 0～8.0 μg/L.
Based on the catalytic effect of trace tin on discoloring reaction of Dimethyl yellow with potassium bromate in 0.01 mol/L sulphuric acid solution and in the presence of emulsion OP,a method for the determination of trace tin by kinetic spectrophotometry has been developed.
The surfactants, emulsifier OP and sodium dodecyl benzene sulfonate (SDBS), may both increase the sensitivity and the solubility of Cd-DBCBAA complex.
Acrylate latex modified by vinyl triisopropoxy silane (C-1706) was synthesized by seeded emulsion polymerization with anionic emulsifier sodium dodecyl sulphonate(SDS) and nonionic emulsifier OP-10 as the multiple emulsifiers at (78±2)°C.
Multi-wall carbon nanotubes (MWNT) have been dispersed into water with the emulsification of oil of turpentine and emulsifier OP TX-100.