CAJ | 학술논문

为准确、快速分析水质铁离子浓度，在磺基水杨酸分光光度法的基础上，提出了图像特征颜色测量铁离子浓度的方法，推导建立了铁离子浓度与图像色度值、光程长的数学方程，开发了基于图像技术的铁离子分析方法和装置。该装置利用高精度彩色摄像头替代人类视觉或分光光度计，基于Lab-VIEW8．6开发了分析测试软件，采集有色溶液的图像，采用无影稳压光源为背景光源，并将采集的图像R、G、B的均值由RGB颜色空间转换到HSI颜色空间，以提高测量准确度。以该装置为研究平台，进行了水质铁离子检测的影响因素分析和实验条件优选，给出了铁离子测量的最优分析条件。在最优条件下，进行了标准曲线绘制、重复性检测和测量结果分析。结果表明：该方法相关系数达为0．9992，检出限为0．002mg／L，相对偏差范围是-0．0570％～0．0780％，与分光光度法比较，该方法准确度高、稳定性好。
위준학、쾌속분석수질철리자농도，재광기수양산분광광도법적기출상，제출료도상특정안색측량철리자농도적방법，추도건립료철리자농도여도상색도치、광정장적수학방정，개발료기우도상기술적철리자분석방법화장치。해장치이용고정도채색섭상두체대인류시각혹분광광도계，기우Lab-VIEW8．6개발료분석측시연건，채집유색용액적도상，채용무영은압광원위배경광원，병장채집적도상R、G、B적균치유RGB안색공간전환도HSI안색공간，이제고측량준학도。이해장치위연구평태，진행료수질철리자검측적영향인소분석화실험조건우선，급출료철리자측량적최우분석조건。재최우조건하，진행료표준곡선회제、중복성검측화측량결과분석。결과표명：해방법상관계수체위0．9992，검출한위0．002mg／L，상대편차범위시-0．0570％～0．0780％，여분광광도법비교，해방법준학도고、은정성호。
Based on sulfosalicylic acid spectrophotometry , and making use of color image characteristics to de-tect the iron ion concentration in water was proposed; and the mathematical equation concerning the iron ion concentration , the image chrominance values and the optical path length were deduced , including the develop-ment of image technology-based method and device for analyzing the iron ion concentration .The device devel-oped can replace the visual or spectrophotometer with high-precision color webcam; the LabVIEW8.6-based analyzing and measuring software helps the device collect the image of colored solution automatically ; taking shadowless stabilize light as the background light , and transforming RGB of image R, G, B’ s mean collected to HSI color space so as to improve the detection accuracy .Taking the device as a platform , analyzing the fac-tors which influencing the iron ion detection in water and optimizing experimental conditions were implemen -ted , including the presence of optimal analysis conditions for iron ion detection .Under the optimal conditions , analyzing the standard curve , repeatability and detection result shows that this method outperforms the spectro-photometry in accuracy and stability , its linear correlation coefficient can reach 0 .999 2 , and its detection lim-it stays at 0.002mg/L together with a-0.057%~0.078 0%relative deviation.