div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: 2005 vol22 1 pp34-37jafiaenglishjfiacontentsto determine chemical oxygen demand COD in this casc the analytical signals were the decrease of absorbance due to the oxidation src=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 2button div class=ts-image a href=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5page2jpg target=_blank amp-img class=ts-thumb alt=Page 2: 2005 vol22 1 pp34-37jafiaenglishjfiacontentsto determine chemical oxygen demand COD in this casc the analytical signals were the decrease of absorbance due to the oxidation src=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 3button div class=ts-image a href=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5page3jpg target=_blank amp-img class=ts-thumb alt=Page 3: 2005 vol22 1 pp34-37jafiaenglishjfiacontentsto determine chemical oxygen demand COD in this casc the analytical signals were the decrease of absorbance due to the oxidation src=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 4button div class=ts-image a href=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5page4jpg target=_blank amp-img class=ts-thumb alt=Page 4: 2005 vol22 1 pp34-37jafiaenglishjfiacontentsto determine chemical oxygen demand COD in this casc the analytical signals were the decrease of absorbance due to the oxidation src=https:reader042vdocumentsusreader042viewer20220410105eb9b3e3473d2b519d5389fchtml5thumbnails4jpg width=142 height=106 layout=responsive amp-imga divdiv