| 摘要: |
| 推导溶液对单色点射光吸收的数学方程式:lna=kcb+B,式中a是吸收池上光栏与点射光源的距离(cm);k是溶液对点射光的吸收系数;c是溶液中吸光粒子的浓度;b是吸收池厚度(2 mm);B是当a=100 cm调节灯光电流使透光(电流)强度为一常数的常数值。用KMnO4标准溶液、Cu(NH3)4SO4标准溶液和Na2Cu Y标准溶液验证吸收方程式,并用Na2Cu Y为介质测定标准黄铜样(Cu=60.93%)取得良好结果(60.95%)。对吸收方程式进行误差分析得到dc/c=da/a(lna-B)a>0,在a>10和T在1~100之间,此式与差示光度法的误差分析式极像。该方法适用于高浓度分析。 |
| 关键词: 光度分析法 点射光 高含量分析 |
| DOI： |
| 投稿时间：2000-08-03 |
| 基金项目: |
|
| An Analysis Method of Spot Light Photometry |
|
Wu Weichang, Lu Zhaoxia
|
| (College of Chemistry and Chemical Engineering, Guangxi University, 10 Xixiangtanglu, Nanning, Guangxi, 530004, China) |
| Abstract: |
| The mathematical inference equation about absorption of monoenergetic spot light in the solution is released as follows:lna=kcb+B.Where,a is the range from spot light to the slot of phototropic surface in the absorption pool;k is the absorption coefficient of spot light in the solution; c is the concentration of light absorbers in the solution;b is the thickness of absorption pool(2 mm);B is a constant standing for light-transmission intensity. Self-manufacture spot light photometry instrument showed a good result in the test for this equation by KMnO4 standard solution, Cu(NH3)4SO4 standard solution and Na2CuY standard solution. There is also a good result (60.95%) in the test of the standard brass sample(Cu=60.93%) in Na2CuY standard solution. Error analysis formula was obtained as dc/c=da/a(lna-B),which is consistent with the error formula of differential photometry method at a>10 and T=1~10.The result indicates that this method could be adopted to heavy contend analysis. |
| Key words: photometry spot light heavy contend analysis |
