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<p>污水COD檢測方法概述：</p><p>　　COD是水質(zhì)監(jiān)測中不可少的項目，其含義指在一定條件下用強氧化劑處理水樣時所消耗氧化劑的量，以氧的mg/L來表示，化學需氧量反映了水中受還原性物質(zhì)污染的程度。在檢測分析過程中，水樣中Cl-易被氧化劑氧化，大量的Cl-使得測定結果偏高，高氯低COD廢水的測定更是現(xiàn)在面臨的一個難題。在實際監(jiān)測中發(fā)現(xiàn)，很多種廢水如化工廢水、味精廢水、海產(chǎn)品加工廢水等Cl-含量都很高，其COD測定需要對Cl-進行屏蔽后進行測定。廣大環(huán)境監(jiān)測工作者在Cl-對COD測定干擾方面做了大量工作，下面從Cl-影響方式和現(xiàn)有的Cl-干擾消除方法兩方面進行闡述。</p><p>　　污水COD檢測方法的工作原理：</p><p>　　試樣中加入定量的重鉻酸鉀溶液，在強酸性介質(zhì)中，以硫酸銀作為催化劑，經(jīng)高溫高壓消解后，用分光光度法測定 COD濃度值。</p><p>　　在600nm波長處測定重鉻酸鉀被還原產(chǎn)生的三價鉻(Cr3+)的吸光度，試樣的 COD 濃度與三價鉻(Cr3+)的吸光度成線性關系。依此關系，可將三價鉻(Cr3+)的吸光度換算成試樣的 COD濃度值。污水COD檢測方法概述：</p><p>　　COD是水質(zhì)監(jiān)測中不可少的項目，其含義指在一定條件下用強氧化劑處理水樣時所消耗氧化劑的量，以氧的mg/L來表示，化學需氧量反映了水中受還原性物質(zhì)污染的程度。在檢測分析過程中，水樣中Cl-易被氧化劑氧化，大量的Cl-使得測定結果偏高，高氯低COD廢水的測定更是現(xiàn)在面臨的一個難題。在實際監(jiān)測中發(fā)現(xiàn)，很多種廢水如化工廢水、味精廢水、海產(chǎn)品加工廢水等Cl-含量都很高，其COD測定需要對Cl-進行屏蔽后進行測定。廣大環(huán)境監(jiān)測工作者在Cl-對COD測定干擾方面做了大量工作，下面從Cl-影響方式和現(xiàn)有的Cl-干擾消除方法兩方面進行闡述。</p><p>　　污水COD檢測方法的工作原理：</p><p>　　試樣中加入定量的重鉻酸鉀溶液，在強酸性介質(zhì)中，以硫酸銀作為催化劑，經(jīng)高溫高壓消解后，用分光光度法測定 COD濃度值。</p><p>　　在600nm波長處測定重鉻酸鉀被還原產(chǎn)生的三價鉻(Cr3+)的吸光度，試樣的 COD 濃度與三價鉻(Cr3+)的吸光度成線性關系。依此關系，可將三價鉻(Cr3+)的吸光度換算成試樣的 COD濃度值。</p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">產(chǎn)品介紹</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">GNST-900S 基于物聯(lián)網(wǎng)智能化發(fā)展思路，歷經(jīng) 3 年研發(fā)的全新一代高性能、高可靠性的多參數(shù)水質(zhì)測定儀，儀器采用 LED 冷光源和光學結構，搭載 Genesite 智能檢測系統(tǒng)，每秒可進行十幾次數(shù)據(jù)均化計算，采用 ST32 位 ARM 處理器，運轉速度更快，穩(wěn)定性更強。從而飛躍性的實現(xiàn)了水質(zhì)測定儀的智能化、高性能、低噪音、穩(wěn)定性強的特點。8 英寸 IPS高清彩色觸摸屏，讓檢測結果直觀明了，可檢測 COD、氨氮、總磷、總氮、重金屬等 40 多種檢測項目，產(chǎn)品內(nèi)置水質(zhì)分析、光度測量、系數(shù)曲線、樣品曲線等多種應用程序。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">應用領域</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">儀器廣泛應用于科研院所、污水處理、環(huán)境監(jiān)測、石化、造紙、制藥、印染、紡織、皮革、釀酒、電子、市政、</span> <span style="font-family:微軟雅黑">高校等行業(yè)并受到廣大用戶的*。</span> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">測定原理</span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•COD的測定依據(jù)《HJ/T 399-2007水質(zhì) 化學需氧量快速消解分光光度法》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•氨氮的測定依據(jù)《HJ 535-2009 水質(zhì) 氨氮的測定納氏試劑分光光度法》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•總磷的測定依據(jù)《GB 11893-89水質(zhì)總磷的測定鉬酸銨分光光度法》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">•總氮的測定依據(jù)《</span><span style=";font-family:宋體;font-size:16px">變色酸法</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">》</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">產(chǎn)品特點</span></strong><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><br/></span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>1）支持 COD、氨氮、</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">總磷、</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">總氮、色度、懸浮物、濁度、重金屬等</span> 40 多種水質(zhì)污染物的測定。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>2）LED 冷光源 10 萬小時光學壽命，性能穩(wěn)定，檢測結果準確。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>3）搭載 Genesite 智能檢測系統(tǒng)，每秒可進行十幾次數(shù)據(jù)均化計算，配合濾波算法濾除干擾，提高檢測數(shù)據(jù)準確性。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>4）ST32 位 ARM 處理器，運轉速度更快，穩(wěn)定性更強。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>5）8 英寸 IPS 級高清彩色電容觸摸屏，畫質(zhì)清晰，反應靈敏。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>6）ABS 材質(zhì)，高強度、耐腐蝕、耐高溫外殼。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>7）多參數(shù)水質(zhì)測定儀和消解儀采用分體式設計，不影響光源系統(tǒng)和光學傳感器的穩(wěn)定性。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>8）檢測結果自動打印、批量檢測、引導檢測模式等功能。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>9）引導式操作系統(tǒng)，扁平式 UI 設計，使用者初次上手便能快速完成污染物檢測。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span style="font-family:微軟雅黑">（</span>10）配備</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">SJ-16X</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">多功能智能消解儀，僅需一鍵完成項目消解。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:28px"><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">（</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">11</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px">）</span><span style="font-family: 微軟雅黑;color: rgb(51, 51, 51);letter-spacing: 0;font-size: 14px"><span 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