Quickly detecting of ocean nutrient was one important task in marine pollution monitoring. We discovered the application of surface-enhanced infrared absorption spectroscopy in the detection of ocean nutrient through researching the evaporation of @entity35599 solution. The @entity3440 ( @entity3758 ) with highly dispersion was prepared by Stober method, The @entity575 / @entity3440 (Ag/ @entity3758 ) composite materials were prepared by mixing @entity3265 solution and @entity3440 aqueous solution. Three kinds of composite materials with different surface morphology were fabricated through optimizing the experimental parameter and changing the experimental process. The surface morphology, crystal orientation and surface plasmon resonance were investigated by means of the @entity4653 ( @entity4653 ), X-ray diffraction (XRD), UV-Visible absorption spectrum and infrared ab- sorption spectroscopy. The @entity4653 images showed that the sample A was purified @entity3758 , sample B and sample C were mixture of @entity575 nanoparticle and @entity3440 , while sample D was completed nanoshell structure. The absorption spectroscopy showed that there was surface plasmon resonance in the UV-visible region, while there was possibility of surface plasmon resonance in the Infrared absorption region. The effect of Ag/ @entity3758 composite material on the infrared absorption spectra of @entity11495 solution was investigated through systematically analyzing the infrared absorption spectroscopy of @entity35599 solution during its evaporation, i. e. the peak integration area of @entity1507 and the peak integration area of water molecule. The experimental results show that the integration area of @entity1507 was enhanced greatly during the evaporation process while the integration area of water molecule decreased continuously. The integration area of @entity1507 comes from the anti-symmetric stretch vibration and the enhancement of the vibration is attributed to the interface effect of Ag/ @entity3758 which is consistent with @entity68688 .R's result.

[Influence of @entity575 / @entity3440 on infrared absorption spectroscopy of XXXX ].

@entity35599 :: ('MESH:C031618', 'Chemical') :: ['sodium nitrate'] @entity575 :: ('MESH:D012834', 'Chemical') :: ['silver'] @entity3265 :: ('MESH:D000641', 'Chemical') :: ['ammonia'] @entity68688 :: ('MESH:C537568', 'Disease') :: ['Jensen T'] @entity1507 :: ('CHEBI:48107', 'Chemical') :: ['nitrate'] @entity3758 :: ('CHEBI:30563', 'Chemical') :: ['SiO2'] @entity3440 :: ('MESH:D012822', 'Chemical') :: ['silica', 'silicon dioxide'] @entity11495 :: ('MESH:D012977', 'Chemical') :: ['sodium nitrite'] @entity4653 :: ('MESH:D004401', 'Disease') :: ['SEM', 'scanning electronic microscope']
@entity35599 :: (MESH:C031618,Chemical) :: ['sodium nitrate']
