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class="dhr_mt1">想了解實(shí)驗室BOD5檢測儀的用戶(hù)請戳下文</h1> <span id="fvkfg1sxx" class="dhr_mt2">發(fā)表時(shí)間：2020-10-30</span> <div id="fvkfg1sxx" class="dhr_mt3"> <p><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑, 宋體, Arial; font-size: 20px; font-weight: 700; text-align: center; background-color: rgb(255, 255, 255);">想了解實(shí)驗室BOD5檢測儀的用戶(hù)請戳下文</span></p><p><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑, 宋體, Arial; font-size: 20px; font-weight: 700; text-align: center; background-color: rgb(255, 255, 255);"><span style="color: rgb(51, 51, 51); font-family: 微軟雅黑, 宋體, Arial; font-size: 14px; background-color: rgb(255, 255, 255);">想了解實(shí)驗室BOD5檢測儀的用戶(hù)請戳下文</span></span></p><p>　　實(shí)驗室BOD5檢測儀是利用空氣壓差法進(jìn)行生化需氧量測定的一種新型儀器，其操作簡(jiǎn)單，能提供與化學(xué)稀釋法可比的準確測量結果，讀數直觀(guān)，使用和維護方便。廣泛應用于環(huán)保監測、石油化工、醫療衛生、教學(xué)科研等部門(mén)對水質(zhì)的監測，是廣大分析工作者的有力工具。</p><p>　　把水樣或經(jīng)過(guò)預處理水樣注入培養瓶?jì)?，同時(shí)在瓶口的吸收杯內放入二氧化碳吸收劑(NaOH)，然后將培養瓶密封，置于容積150L，內含電源插座的生化培養箱內，當被測樣品在20±1℃條件下恒溫進(jìn)行五日培養后，在一定的攪拌速度下，瓶?jì)鹊乃畼舆M(jìn)行生物氧化反應。有機物轉變成氮、碳和硫的氧化物，并產(chǎn)生二氧化碳氣體被氫氧化鈉吸收，而培養瓶?jì)壬喜靠臻g的氧氣不斷地供給水樣中微生物的需氧量，培養瓶?jì)犬a(chǎn)生了壓力差，通過(guò)檢測玻璃管中汞的高度，即可計算出水樣在規定測定期間內的BOD值。</p><p>　　實(shí)驗室BOD5檢測儀是利用空氣壓差法進(jìn)行生化需氧量測定的一種新型儀器，其操作簡(jiǎn)單，能提供與化學(xué)稀釋法可比的準確測量結果，讀數直觀(guān)，使用和維護方便。注釋:生化需氧量或生化耗氧量(一般指五日生化學(xué)需氧量)，表示水中有機物等需氧污染物質(zhì)含量的一個(gè)綜合指標。說(shuō)明水中有機物由于微生物的生化作用進(jìn)行氧化分解，使之無(wú)機化或氣體化時(shí)所消耗水中溶解氧的總數量。通常情況下是指水樣充滿(mǎn)完全密閉的溶解氧瓶中，在20℃的暗處培養5d，分別測定培養前后水樣中溶解氧的質(zhì)量濃度，由培養前后溶解氧的質(zhì)量濃度之差，計算每升樣品消耗的溶解氧量，以BOD5形式表示。其單位ppm或毫克/升表示。其值越高說(shuō)明水中有機污染物質(zhì)越多，污染也就越嚴重。</p><p>　　工作原理：</p><p>　　標準的五天稀釋方法需繁瑣的樣品準備和操作得到可靠的結果，微機控制的裝置和簡(jiǎn)化的BOD方法，您可以迅速正確地完成重要的測試。整個(gè)設備運行過(guò)程可無(wú)人看管。不需遠控設施。操作者只需簡(jiǎn)單的加入測量的樣品和BOD營(yíng)養緩沖劑到6個(gè)BOD瓶中，將瓶子連接到微處理器控制裝置的壓力傳感器上，從四個(gè)量程中選擇一個(gè)合適的量程，實(shí)驗室BOD5檢測儀便可完成以后的測試。當樣品溫度穩定后，裝置開(kāi)始讀出BOD值并儲存在儀器的內存中，每15分鐘記錄一次，可選擇測試5天或10天的周期。</p><p><span 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