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溶解氧分析儀怎么分析水中的含氧量多少（如何標定）
發布日期：2022/9/17 15:10:19
溶(rong)解氧分(fen)析儀測量溶(rong)解在(zai)水(shui)溶(rong)液中的(de)氧氣量。氧氣通過(guo)周(zhou)圍的(de)空(kong)氣、空(kong)氣運動和光合作(zuo)用溶(rong)解在(zai)水(shui)中。溶解(jie)氧(yang)分析儀可用于(yu)測量和監(jian)測氧(yang)氣水(shui)平會(hui)影響反應速率、過程效率或環境的(de)過程：例如(ru)水(shui)產養殖、生物(wu)反應、環境測試（湖(hu)泊(bo)、溪流、海洋）、水(shui)/廢水(shui)處理、葡萄酒生產。

便攜式(shi)溶解氧(yang)分析儀

溶(rong)(rong)(rong)解(jie)(jie)氧(yang)(yang)(yang)(yang)(yang)(yang)是(shi)空(kong)(kong)氣(qi)(qi)中(zhong)(zhong)溶(rong)(rong)(rong)解(jie)(jie)在(zai)水中(zhong)(zhong)的(de)分(fen)子(zi)氧(yang)(yang)(yang)(yang)(yang)(yang)。水中(zhong)(zhong)溶(rong)(rong)(rong)解(jie)(jie)氧(yang)(yang)(yang)(yang)(yang)(yang)的(de)含量(liang)(liang)與(yu)空(kong)(kong)氣(qi)(qi)中(zhong)(zhong)氧(yang)(yang)(yang)(yang)(yang)(yang)分(fen)壓和(he)水溫密(mi)切相關(guan)。在(zai)自然條件下(xia)，空(kong)(kong)氣(qi)(qi)中(zhong)(zhong)的(de)含氧(yang)(yang)(yang)(yang)(yang)(yang)量(liang)(liang)變(bian)化(hua)不(bu)大(da)，所(suo)以(yi)水溫是(shi)主(zhu)要(yao)因(yin)素(su)。水溫越(yue)低，水中(zhong)(zhong)的(de)溶(rong)(rong)(rong)解(jie)(jie)氧(yang)(yang)(yang)(yang)(yang)(yang)含量(liang)(liang)越(yue)高。溶(rong)(rong)(rong)解(jie)(jie)在(zai)水中(zhong)(zhong)的(de)分(fen)子(zi)氧(yang)(yang)(yang)(yang)(yang)(yang)稱(cheng)為溶(rong)(rong)(rong)解(jie)(jie)氧(yang)(yang)(yang)(yang)(yang)(yang)，通常用DO表(biao)示，以(yi)每(mei)升水含氧(yang)(yang)(yang)(yang)(yang)(yang)的(de)毫克數(shu)表(biao)示。水中(zhong)(zhong)溶(rong)(rong)(rong)解(jie)(jie)氧(yang)(yang)(yang)(yang)(yang)(yang)的(de)多少是(shi)衡(heng)量(liang)(liang)水體(ti)自凈能力(li)的(de)指(zhi)標。


溶解氧(yang)是水(shui)質(zhi)的一個關鍵指標(biao)，在(zai)各種(zhong)應用(yong)中(zhong)(zhong)都受(shou)到依(yi)賴。工業水(shui)處(chu)理中(zhong)(zhong)的溶解氧(yang)水(shui)平可用(yong)作導致(zhi)設備腐蝕的水(shui)質(zhi)問(wen)題的指標(biao)。監測(ce)水(shui)產養殖魚類運輸(shu)和水(shui)族館應用(yong)中(zhong)(zhong)的溶解氧(yang)，以確保水(shui)生物(wu)種(zhong)在(zai)其(qi)棲息(xi)地中(zhong)(zhong)有足夠的氧(yang)氣(qi)來生存生長和繁殖。在(zai)市政水(shui)處(chu)理設施(shi)中(zhong)(zhong)，在(zai)曝(pu)氣(qi)水(shui)處(chu)理等過程中(zhong)(zhong)對廢水(shui)中(zhong)(zhong)的溶解氧(yang)進行監測(ce)。然而，目前(qian)測(ce)量溶解氧(yang)的方法(fa)很(hen)多(duo)，因(yin)此在(zai)水(shui)質(zhi)檢(jian)測(ce)中(zhong)(zhong)選擇(ze)溶解氧(yang)測(ce)量方法(fa)顯得尤為重要。

平板式溶解氧(yang)分(fen)析儀(yi)

溶(rong)(rong)解(jie)氧(yang)的(de)(de)(de)來(lai)源通常有(you)(you)兩種(zhong)：一(yi)種(zhong)來(lai)源是水(shui)(shui)(shui)中(zhong)溶(rong)(rong)解(jie)氧(yang)不飽(bao)和(he)時大氣(qi)中(zhong)的(de)(de)(de)氧(yang)氣(qi)滲入水(shui)(shui)(shui)體；另一(yi)個來(lai)源是水(shui)(shui)(shui)中(zhong)植物(wu)(wu)通過光合作用(yong)釋放的(de)(de)(de)氧(yang)氣(qi)。因此，由于空氣(qi)中(zhong)氧(yang)氣(qi)的(de)(de)(de)溶(rong)(rong)解(jie)和(he)綠色水(shui)(shui)(shui)生(sheng)植物(wu)(wu)的(de)(de)(de)光合作用(yong)，水(shui)(shui)(shui)中(zhong)的(de)(de)(de)溶(rong)(rong)解(jie)氧(yang)會不斷得到補充。但當水(shui)(shui)(shui)體被有(you)(you)機物(wu)(wu)污染時，耗氧(yang)嚴(yan)重，溶(rong)(rong)解(jie)氧(yang)不能(neng)及時補充，水(shui)(shui)(shui)體中(zhong)的(de)(de)(de)厭氧(yang)菌會迅速繁殖，有(you)(you)機物(wu)(wu)會使水(shui)(shui)(shui)體變(bian)黑變(bian)臭。

溶(rong)解氧值是研究(jiu)水的自(zi)(zi)凈能(neng)(neng)力(li)的基礎。水中溶(rong)解氧被消(xiao)耗，恢復到初始狀態需要很短(duan)的時(shi)間，說明(ming)水體(ti)(ti)具有(you)較強的自(zi)(zi)凈能(neng)(neng)力(li)，或(huo)者水體(ti)(ti)沒有(you)受(shou)到嚴(yan)重污染。否則，說明(ming)水體(ti)(ti)污染嚴(yan)重，自(zi)(zi)凈能(neng)(neng)力(li)弱，甚至喪失自(zi)(zi)凈能(neng)(neng)力(li)。

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