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width:349px" /></span></span><br /><strong> COD水質(zhì)在線監(jiān)測儀</strong><span style="font-family:宋體"><span style="color:rgb(0, 0, 0)">可廣泛應(yīng)用于污染源水監(jiān)測/工業(yè)生產(chǎn)過程用水/工業(yè)和市政污水處理等各個領(lǐng)域。</span></span></span></p><p><span style="font-size:14px"><span style="font-family:宋體"> 反映了水中受還原性物質(zhì)污染的程度，水中還原性物質(zhì)包括有機物、</span> <span style="font-family:宋體">亞硝酸鹽</span><span style="font-family:calibri">. ,</span><span style="font-family:宋體">亞鐵鹽、硫化物等。水被有機物污染是很普遍的，因為化學(xué)需氧量也作為有機物相對含量的指標(biāo)之一，但只能反映能被氧化的有機污染，不能反映能被氧化的有機污染，不能反映多環(huán)芳烴、</span><span style="font-family:calibri">PCB</span><span style="font-family:宋體">，二英類等的污染狀況。</span></span></p><p> <span style="font-size:14px"> COD<span style="font-family:宋體">的定量方法因氧化劑的種類和濃度、氧化酸度、反應(yīng)溫度、時間及催化劑的有無等條件的不同而出現(xiàn)不同的結(jié)果。另一方面，在同樣條件下也會因水體中還原性物質(zhì)的種類與濃度不同而呈現(xiàn)不同的氧化程度?；瘜W(xué)需氧量是一個條件性指標(biāo)，</span> <span style="font-family:宋體">必項嚴格按操作步驟進行。對于</span>COD<span style="font-family:宋體">來說，它并不是單一含義的指標(biāo)，隨著測定方法的不同，測定值也不同，它是水體中受還原性物質(zhì)污染的綜合性指標(biāo)，主要是水體受有機物污染的綜合性指標(biāo)。</span></span></p><p><span style="font-size:14px"><span style="font-family:宋體"><span style="color:rgb(0, 0, 0)"> </span></span></span></p> </div> <div id="qprrcczb" class="lyNyProDetail_ConTit" id="cpzx"><p>產(chǎn)品咨詢</p></div> <div id="qprrcczb" class="ly_msg"><link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="qprrcczb" class="ly_msg" id="ly_msg"> <form method="post" name="form2" id="form2"> <h3>留言框 </h3> <ul> <li> <h4 class="xh">產(chǎn)品：</h4> <div id="qprrcczb" class="msg_ipt1"><input class="textborder" size="30" name="Product" id="Product" value="COD水質(zhì)在線監(jiān)測分析儀化學(xué)需氧量" placeholder="請輸入產(chǎn)品名稱" /></div> </li> <li> <h4>您的單位：</h4> <div id="qprrcczb" class="msg_ipt12"><input 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