化学分析计量
化學分析計量
화학분석계량
Chemical Analysis and Meterage
2015年
5期
65-68
,共4页
王宗廷%张军杰%王凤英%王明栋%韩旭
王宗廷%張軍傑%王鳳英%王明棟%韓旭
왕종정%장군걸%왕봉영%왕명동%한욱
SERS%纳米化银基底%氧化还原法%制备%汽油%噻吩%硫%定量分析
SERS%納米化銀基底%氧化還原法%製備%汽油%噻吩%硫%定量分析
SERS%납미화은기저%양화환원법%제비%기유%새분%류%정량분석
SERS%nano-silver substrate%oxidation-reduction method%synthesis%gasoline%thiophene%sulfur%quantitative analysis
采用恒电位氧化还原法研制出规整度高的纳米化银基底。利用研制的纳米化银基底测试了模拟汽油中噻吩硫的表面增强拉曼光谱。结果显示，1005 cm–1特征峰峰高增大约125倍，峰面积约增强6300倍。特征峰相对峰面积与模拟汽油中噻吩硫含量呈乘数幂关系，关系式为Y=59439X 0.3965。以此利用相对峰面积计算汽油中噻吩硫含量。利用纳米银基底表面增强拉曼光谱法测定汽油中噻吩含量，测定结果与气相色谱法测定结果相符，相对标准偏差为0.07%，加标回收率为97%～106%。该法可用于油品中微量硫的绿色分析和产品质量控制。
採用恆電位氧化還原法研製齣規整度高的納米化銀基底。利用研製的納米化銀基底測試瞭模擬汽油中噻吩硫的錶麵增彊拉曼光譜。結果顯示，1005 cm–1特徵峰峰高增大約125倍，峰麵積約增彊6300倍。特徵峰相對峰麵積與模擬汽油中噻吩硫含量呈乘數冪關繫，關繫式為Y=59439X 0.3965。以此利用相對峰麵積計算汽油中噻吩硫含量。利用納米銀基底錶麵增彊拉曼光譜法測定汽油中噻吩含量，測定結果與氣相色譜法測定結果相符，相對標準偏差為0.07%，加標迴收率為97%～106%。該法可用于油品中微量硫的綠色分析和產品質量控製。
채용항전위양화환원법연제출규정도고적납미화은기저。이용연제적납미화은기저측시료모의기유중새분류적표면증강랍만광보。결과현시，1005 cm–1특정봉봉고증대약125배，봉면적약증강6300배。특정봉상대봉면적여모의기유중새분류함량정승수멱관계，관계식위Y=59439X 0.3965。이차이용상대봉면적계산기유중새분류함량。이용납미은기저표면증강랍만광보법측정기유중새분함량，측정결과여기상색보법측정결과상부，상대표준편차위0.07%，가표회수솔위97%～106%。해법가용우유품중미량류적록색분석화산품질량공제。
The more regular nano-silver substrate was prepared by potentiostatic oxidation-reduction method. It was used to detect thiophene in simulated gasoline by surface-enhanced Raman spectroscopy(SERS). The peak height of 1005 cm–1as characteristic peak was enhanced 125 times, and the peak area was enhanced 6 300 times. The equation between characteristic peak area and the sulfur concentration in thiophene in simulated gasoline wasY=59439X0.3965. The quantitative analysis of sulfur of thiophene in gasoline with this method were consistent with those detected by GC. The relative standard deviation of detection results was 0.07%, and the recovery was 97%–106%. This method can be used in sulfur green analysis in oil and quantity controlling.
