鍒嗘瀽鍖栧锛堥珮鏁欑浜旂増锛夎鍚庝範棰樺強鎬濊�冮
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鐢典綅鍒嗘瀽娉?/p>
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鑰?/p>
棰?/p>
1.
鍙傛瘮鐢垫瀬鍜屾寚绀虹數鏋佹湁鍝簺绫诲瀷瀹冧滑鐨勪富瑕佷綔鐢ㄦ槸浠�涔?/p>
绛旓細鍙傛瘮鐢垫瀬鍖呮嫭鏍囧噯姘㈢數鏋侊紙
SHE
锛?/p>
锛屾爣鍑嗘阿鐢垫瀬鏄渶绮剧‘鐨勫弬姣旂數鏋侊紝鏄弬姣旂數鏋?/p>
鐨勪竴绾ф爣鍑嗐�傚疄闄呭伐浣滀腑甯哥敤鐨勫弬姣旂數鏋佹槸鐢樻睘鐢垫瀬鍜岄摱
-
姘寲閾剁數鏋併�?/p>
鍙傛瘮鐢垫瀬鐢典綅鎭掑畾锛屽叾涓昏浣滅敤鏄祴閲忕數姹犵數鍔ㄥ娍锛岃绠楃數鏋佺數浣嶇殑鍩哄噯銆?/p>
鎸囩ず鐢垫瀬鍖呮嫭閲戝睘
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閲戝睘闅炬憾鐩愮數鏋侊紝
姹炵數鏋侊紝鎯版�ч噾灞炵數鏋侊紝
绂?/p>
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姣旓紝浜х敓鑳芥柉鐗瑰搷搴旓紝涓昏浣滅敤鏄祴瀹氭憾娑蹭腑鍙備笌鍗婂弽搴旂殑绂诲瓙娲诲害銆?/p>
2.
鐩存帴鐢典綅娉曠殑渚濇嵁鏄粈涔堜负浠�涔堢敤姝ゆ硶娴嬪畾婧舵恫
pH
鏃讹紝
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pH
缂撳啿婧舵恫
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E=
桅
鍙傛瘮
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桅
Mn+/M
=
桅
鍙傛瘮
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胃
Mn+/M
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RT
ln
伪
Mn+
寮忎腑桅
鍙傛瘮
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胃
Mn+/M
鍦ㄦ俯搴︿竴瀹氭椂锛?/p>
閮芥槸甯告暟銆傜敱姝ゅ紡鍙煡锛屽緟娴嬬瀛愮殑娲诲害鐨勫鏁颁笌鐢垫睜鐢靛姩鍔挎垚鐩寸嚎鍏崇郴锛屽彧瑕佹祴鍑虹數姹?/p>
鐢靛姩鍔?/p>
E
锛屽氨鍙眰寰椢?/p>
Mn+
銆?/p>
娴嬪畾婧舵恫鐨?/p>
pH
鏃舵槸渚濇嵁锛?/p>
E
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2
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鈥?/p>
桅
AgCl/Ag
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K
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L
,
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桅
AgCl/Ag
锛?/p>
K
锛屛?/p>
L
鍦ㄤ竴瀹氱殑鏉′欢涓嬮兘鏄父鏁帮紝灏嗗叾鍚堝苟涓?/p>
K
藠锛岃�?/p>
K
藠涓寘鎷?
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鍑嗭紝
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pH
鍊硷紝鍗筹細
25
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Es
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Ex
鏃剁殑鏉′欢淇濇寔涓嶅彉锛屽垯
Ks
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藠
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K
藠銆?/p>
3.
绠�杩?/p>
pH
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绛旓細鐜荤拑鐢垫瀬鐨勪富瑕侀儴鍒嗘槸
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H
+
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娉″唴瑁呮湁
pH
涓�瀹氱殑路
L
-1
鐨?/p>
HCl
鍐呭弬姣旀憾娑诧紝
鍏朵腑鎻掑叆涓�鏀?/p>
Ag-AgCl
鐢垫瀬浣滀负鍐呭弬姣?/p>
鐢垫瀬锛?/p>
杩欐牱灏辨瀯鎴愪簡鐜荤拑鐢垫瀬銆?/p>
鐜荤拑鐢垫瀬涓唴鍙傛瘮鐢垫瀬鐨勭數浣嶆槸鎭掑畾鐨勶紝
涓庡緟娴嬫憾娑茬殑
pH
鏃犲叧銆傜幓鐠冪數鏋佷箣鎵�浠ヨ兘娴嬪畾婧舵恫
pH
锛屾槸鐢变簬鐜荤拑鑶滀骇鐢熺殑鑶滅數浣嶄笌寰呮祴婧舵恫
pH
鏈夊叧銆?/p>
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