水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定JH-TD300-青島景弘環(huán)?？萍加邢薰?/TITLE> <META NAME="Keywords" CONTENT="水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定"> <META NAME="Description" CONTENT="青島景弘環(huán)保科技有限公司所提供的JH-TD300水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定質(zhì)量可靠、規(guī)格齊全,青島景弘環(huán)保科技有限公司不僅具有專業(yè)的技術(shù)水平,更有良好的售后服務(wù)和優(yōu)質(zhì)的解決方案,歡迎您來電咨詢此產(chǎn)品具體參數(shù)及價格等詳細(xì)信息！"> <script src="/ajax/common.ashx" type="text/javascript"></script> <script src="/ajax/NewPersonalStyle.Classes.SendMSG,NewPersonalStyle.ashx" type="text/javascript"></script> <script src="/js/videoback.js" type="text/javascript"></script> <link href="/skins/390240/css/style.css" rel="stylesheet" /> <link href="/skins/390240/css/main.css" rel="stylesheet" /> <script src="/skins/390240/js/jquery-1.8.3.min.js" type="text/javascript"></script> <script src="/skins/390240/js/setimg1.js"></script> <script> $(document).ready(function(){ var obj = $("div.beijing").children("ul.menu").children("li"); var 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class="eoskoy0kygyw" id="prod_gs" class="prod_gs"> <div id="eoskoy0kygyw" class="prod_view_name"> <strong class="prod_view_name_bt">產(chǎn)品名稱：</strong> <b><h1 style="font-size: inherit"><span id="ShoveWebControl_Text3">水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定</span></h1></b> </div> <div class="eoskoy0kygyw" id="xn_c_prodv_26_wrap" class="xn_c_prodv_26_wrap"> <div id="eoskoy0kygyw" class="xn_c_prodv_26_name" style="line-height: 36px;"> <span id="eoskoy0kygyw" class="xn_c_prodv_26_namewz"><span name="_prodv_26_namewz">產(chǎn)品型號：</span></span> <span id="eoskoy0kygyw" class="xn_c_prodv_26_namemc"><span id="xn_c_prodv_26_Text1">JH-TD300</span></span> </div> <div id="eoskoy0kygyw" class="xn_c_prodv_26_name" style="line-height: 36px;"> <span id="eoskoy0kygyw" class="xn_c_prodv_26_namewz"><span name="_prodv_26_namewz">產(chǎn)品時間：</span></span> <span id="eoskoy0kygyw" class="xn_c_prodv_26_namemc"><span id="xn_c_prodv_26_Text1">2024-07-14</span></span> </div> </div> <div class="eoskoy0kygyw" id="prod_view_ms" class="prod_view_ms"><span id="ShoveWebControl_Text7">水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定：</br>該產(chǎn)品將經(jīng)典的比色法與計算機(jī)技術(shù)結(jié)合起來，應(yīng)用微電腦光電子比色檢測原理取代傳統(tǒng)的目視比色法，測量分辨率大大提高，實(shí)現(xiàn)了測定過程的自動化?？蓮V泛地應(yīng)用于廠礦企業(yè)排污口監(jiān)測、城市污水處理工廠進(jìn)出口監(jiān)測、江河湖泊水質(zhì)監(jiān)測和污水治理設(shè)施過程控制之中。</span></div> </div> <p></p> </dd> </dl> <div id="eoskoy0kygyw" class="main_top3"><p>產(chǎn)品介紹</p></div> <div id="eoskoy0kygyw" class="product1 pro_1"> <p><span style="font-size:16px"><span style="font-family:黑體"><strong>水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定</strong>技術(shù)參數(shù)：</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> 曲線參數(shù)：可設(shè)定100條測量曲線參數(shù)；<br /> 校準(zhǔn)：1-7點(diǎn)校正模式，自動校正曲線值；<br /> 時鐘：內(nèi)置實(shí)時時鐘，實(shí)時時鐘月累積誤差小于10秒；<br /> 記錄存儲：可存儲30000次測定結(jié)果，數(shù)據(jù)斷電不丟失；<br /> 打 ?。罕銛y式打印機(jī)，直接打印測量結(jié)果（選配）；<br /> 通信方式：RS232，可將測量結(jié)果上傳至電腦，便于用戶統(tǒng)計分析；<br /> 顯示：240*128大屏幕藍(lán)色背光顯示器，中文操作界面；<br /> 環(huán)境溫度：（5 ~ 40）℃；環(huán)境濕度：相對濕度＜ 85%（無冷凝）；<br /> 外形尺寸：270*200*120mm；整機(jī)重量1KG；<br /> 工作電源：AC220V±10% / 50Hz。<br /> </span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><img alt="" src="https://img50.chem17.com/gxhpic_d55d0c909a/661bc51f812819653da2fbc8ac4a1bc37b1e74a04987b8d555faad7819be59bbfd34149bb38a6b0b.jpg" style="height:750px; width:1000px" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> </span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>水質(zhì)檢測常規(guī)9項(xiàng)指標(biāo)水利水質(zhì)測定</strong>產(chǎn)品簡介：</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="color:rgb(90, 90, 90)"> </span><strong style="line-height:1.6em">原理</strong></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="line-height:1.6em">在水樣中加入已知量的重鉻酸鉀溶液，并在強(qiáng)酸介質(zhì)下以銀鹽作催化劑，經(jīng)沸騰回流后，以試亞鐵靈為指示劑，用硫酸亞鐵銨滴定水樣中未被還原的重鉻酸鉀有西歐愛好的硫酸亞鐵銨的量換算成消耗氧的質(zhì)量濃度。</span></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">在酸性重鉻酸鉀條件下，芳烴及吡啶難以被氧化，其氧化率較低。在硫酸因催化作用下，直鏈脂肪族化合物可有效地被氧化。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong style="line-height:1.6em">儀器</strong></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="line-height:1.6em">常用實(shí)驗(yàn)室儀器和下列儀器。</span></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>1</strong> 回流裝置：帶有24號標(biāo)準(zhǔn)磨口的250mL錐形瓶的全玻璃回流裝置?；亓骼淠荛L度為300～500mm。若取樣量在30mL以上，可采用帶500mL錐形瓶的全玻璃回流裝置。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>2</strong> 加熱裝置。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>3</strong> 25mL或50mL酸式滴定管。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><img alt="" src="https://img47.chem17.com/gxhpic_d55d0c909a/661bc51f812819653da2fbc8ac4a1bc3ff1548a2bd157b8abc4ce5123542e0a944b1221307d32179.jpg" style="height:750px; width:1000px" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>步驟</strong></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong style="line-height:1.6em">1</strong><span style="line-height:1.6em"> 對于COD值小于50mg/L的水樣，應(yīng)采用低濃度的重鉻酸鉀標(biāo)準(zhǔn)溶液（4.5.2）氧化，加熱回流以后，采用低濃度的硫酸亞鐵銨標(biāo)準(zhǔn)溶液（4.6.4）回滴。</span></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>2</strong> 該方法對未經(jīng)稀釋的水樣其測定上限為700mg/L，超過此*必須經(jīng)稀釋后測定。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>3 </strong> 對于污染嚴(yán)重的水樣，可選取所需體積1/10的試料和1/10的試劑，放入10*150 mm硬質(zhì)玻璃管中，搖勻后，用酒精燈加熱至沸數(shù)分鐘，觀察溶液是否變成藍(lán)綠色。如呈藍(lán)綠色，應(yīng)再適當(dāng)少取試料，重復(fù)以上試驗(yàn)，直至溶液不變藍(lán)綠色為止。從而確定待測水樣適當(dāng)?shù)南♂尡稊?shù)。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>4</strong> 取試料（6.2）于錐形瓶中，或取適量試料加水至20.0Ml。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>5 </strong> 空白試驗(yàn)：按相同步驟以20.0mL代替試料進(jìn)行空白試驗(yàn)，其余試劑和試料測定（7.8）相同，記錄下空白滴定時消耗硫酸亞鐵銨標(biāo)準(zhǔn)溶液的毫升數(shù)V<sub>1</sub>。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>6 </strong> 校核試驗(yàn)：按測定試料（7.8）提供的方法分析20.0m L鄰苯二甲酸氫鉀標(biāo)準(zhǔn)溶液（4.7）的COD值，用以檢驗(yàn)操作技術(shù)及試劑純度。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">該溶液的理論COD值為500mg/L，如果校核試驗(yàn)的結(jié)果大于該值的96%，即可認(rèn)為實(shí)驗(yàn)步驟基本上是適宜的，否則，必須尋找失敗的原因，重復(fù)實(shí)驗(yàn)，使之達(dá)到要求。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>7</strong> 去干擾試驗(yàn)：無機(jī)還原性物質(zhì)如亞硝酸鹽、硫化物及二價鐵鹽將使結(jié)果增加，將其須氧量作為水樣COD值的一部分是可以接受的。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">該實(shí)驗(yàn)的主要干擾物為氯化物，可加入硫酸汞（4.2）部分地除去，經(jīng)回流后，氯離子可與硫酸汞結(jié)合成可溶性的氯汞絡(luò)合物。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">當(dāng)氯離子含量超過1000mg/L時，COD的低允許值為250mg/L，低于此值結(jié)果的準(zhǔn)確度就不可靠。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>8 </strong>水樣的測定：于試料（7.4）中加入10.0mL重鉻酸鉀標(biāo)準(zhǔn)溶液（4.5.1）和幾顆防爆沸玻璃珠（4.9），搖勻。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">將錐形瓶接到回流裝置（5.1）冷凝管下端，接通冷凝水。從冷凝管上端緩慢加入30mL硫酸銀-硫酸試劑（4.4），以防止低沸點(diǎn)有機(jī)物的逸出，不斷旋動錐形瓶使之混合均勻。自溶液開始沸騰起回流兩小時。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">冷卻后，用20～30mL水自冷凝管上端沖洗冷凝管后，取下錐形瓶，再用水稀釋至140mL左右。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">溶液冷卻至室溫后，加入3滴1，10-菲繞啉指示劑溶液（4.8），用硫酸亞鐵銨標(biāo)準(zhǔn)滴定溶液（4.6）滴定，溶液的顏色有黃色經(jīng)藍(lán)綠色變?yōu)榧t褐色即為終點(diǎn)。記下硫酸亞鐵銨標(biāo)準(zhǔn)滴定溶液的消耗毫升數(shù)V<sub>2</sub>。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>9 </strong>在特殊情況下，需要測定的試料在10.0mL到50.0mL之間，試劑的體積或重量按表1作相應(yīng)的調(diào)整。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><img alt="" src="https://img50.chem17.com/gxhpic_d55d0c909a/661bc51f812819653da2fbc8ac4a1bc34ca3a572bc2fcf235314d8592827b05a689744b5f6265fcb.jpg" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> <img alt="" src="https://img47.chem17.com/gxhpic_d55d0c909a/87ca85b88f793ad36950eaf833a74259b888c89a50acb4d92601a85702410dd77c9ade087f4ca4f7.jpg" style="height:513px; width:790px" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">1、以上所述產(chǎn)品規(guī)格、圖片、資訊等僅供參考,如有更新, 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