鍒嗘瀽鍖栧缁冧範棰?/p>
绗洓閮ㄥ垎锛氶厤浣嶆淮瀹?/p>
涓�锛庡～绌猴細
1
锛?/p>
鐢变簬閰稿害褰卞搷
M-EDTA
鐨勫钩琛″父鏁帮紝
涓轰簡琛￠噺涓嶅悓
锛?/p>
锛?/p>
鏉′欢涓嬮厤鍚堢墿鐨勫疄闄呯ǔ瀹氭�э紝
寮曞叆锛?/p>
锛夛紝瀹冧笌
K
锛?/p>
MY
锛?/p>
鐨勫叧绯讳负锛?/p>
锛夊畠鍙嶆槧浜嗛厤鍚堢墿鐨勫疄闄咃紙
锛?/p>
2
锛?/p>
0.01mol路
L
-1
EDTA
婊村畾鍚屾祿搴︾殑
Ca
2+
锛?/p>
pH
涓?/p>
10
鏃讹紝
lgK鈥?/p>
(CaY)
= 10.24
锛屽寲瀛﹁閲忕偣鏃舵憾
娑茬殑
PCa=
锛?/p>
锛?/p>
3
锛庡浜庢湁
M
銆?/p>
N
涓ょ閲戝睘绂诲瓙鍏卞瓨鐨勬贩鍚堟憾娑诧紝鑻ユ兂浠?/p>
EDTA
婊村畾鍏朵腑鐨?/p>
M
绂诲瓙锛岃�?/p>
N
绂诲瓙鐨勫叡瀛樹笉浜х敓骞叉壈锛岋紙璇樊灏忎簬鎴栫瓑浜?/p>
0.1%
锛夛紝鍒欏繀椤绘弧瓒筹紙
锛夊強锛?/p>
锛夋潯浠躲�?/p>
4
锛庨厤浣嶆淮瀹氭洸绾夸腑绐佽穬鑼冨洿鐨勫ぇ灏忓彇鍐充簬閲戝睘绂诲瓙娴撳害鍜岋紙
锛?/p>
锛岄噾灞炵瀛愭祿搴︿富瑕佷細褰?/p>
鍝嶆洸绾跨獊璺冭寖鍥寸殑锛?/p>
锛夐檺銆?/p>
浜岋紟閫夋嫨锛?/p>
1
锛庨噾灞炵瀛?/p>
M
锛岃兘澶熺洿鎺ョ敤
EDTA
婊村畾鎵�瀹硅鐨勬渶澶?/p>
伪
Y
锛?/p>
H
锛?/p>
(c(M
n+
)=0.01mol路
L
-1
)
锛?/p>
A
锛?/p>
lg伪
Y
锛?/p>
H
锛?/p>
鈮gK
(MY)
锛?/p>
8
锛?/p>
锛?/p>
B
锛?/p>
lg伪
Y
锛?/p>
H
锛?/p>
鈮?nbsp;lgK
(MY)
锛?/p>
8
锛?/p>
锛?/p>
C
锛?/p>
lg伪
Y
锛?/p>
H
锛?/p>
鈮gK
(MY)
锛?/p>
8
锛?/p>
锛?/p>
D
锛?/p>
lg伪
Y
锛?/p>
H
锛?/p>
鈮?nbsp;lgK鈥?/p>
(MY )
锛?/p>
8
銆?/p>
2
锛庡湪
EDTA
閰嶄綅婊村畾涓紝
PH
銆侀吀鏁堝簲绯绘暟
伪
Y
锛?/p>
H
锛?/p>
瀵归厤浣嶆淮瀹氱殑褰卞搷鏄?/p>
锛?/p>
A
锛?/p>
pH
鍗囬珮锛?/p>
伪
Y
锛?/p>
H
锛?/p>
澧炲ぇ锛岄厤鍚堢墿绋冲畾鎬у澶э紱
锛?/p>
B
锛?/p>
pH
鍗囬珮锛?/p>
伪
Y
锛?/p>
H
锛?/p>
鍙樺皬锛岄厤鍚堢墿绋冲畾鎬у崌楂橈紱
锛?/p>
C
锛夐吀搴﹀澶э紝
伪
Y
锛?/p>
H
锛?/p>
鍗囬珮锛岄厤鍚堢墿绋冲畾鎬у澶э紱
锛?/p>
D
锛夐吀搴﹀澶э紝
伪
Y
锛?/p>
H
锛?/p>
鍙樺皬锛?/p>
pH
绐佽穬鑼冨洿鍙樺ぇ銆?/p>
3
锛?/p>
鐢?/p>
EDTA
婊村畾
Ca
2+
绂诲瓙鍜?/p>
Mg
2+
绂诲瓙鏃讹紝
鑻ヨ娑堥櫎灏戦噺
Fe
3+
绂诲瓙鍜?/p>
Al
3+
绂诲瓙鐨勫共鎵帮紝
搴旈噰
鍙栫殑鏂规硶鏄?/p>
锛?/p>
A
锛夊姞
NaOH
浣?/p>
Fe
3+
绂诲瓙鍜?/p>
Al
3+
绂诲瓙褰㈡垚娌夋穩锛?/p>
锛?/p>
B
锛夊皢
Fe
3+
绂诲瓙杩樺師涓?/p>
Fe
2+
绂诲瓙锛屽姞
(NH
4
)F
浣?/p>
Al
3+
绂诲瓙褰㈡垚
[AlF
6
]
3-
锛?/p>
锛?/p>
C
锛夊湪閰告�ф潯浠朵笅鍔犱笁涔欓唶鑳猴紝鐒跺悗璋冭妭鑷崇⒈鎬э紱
锛?/p>
D
锛夊姞
NaF
鎺╄斀
Fe
3+
銆?/p>
Al
3+
绂诲瓙銆?/p>
4
锛庡湪閰嶅悎婊村畾娉曚腑涓嬮潰鍙欒堪涓敊璇殑鏄�?/p>
锛?/p>
A
锛夐吀鏁堝簲绯绘暟瓒婂皬锛屽垯閰嶅悎鐗╃殑绋冲畾鎬ц秺澶э紱
锛?/p>
B
锛?/p>
pH
鍊艰秺澶э紝鍒欓吀鏁堝簲绯绘暟瓒婂皬锛?/p>
锛?/p>
C
锛?/p>
浠庨吀鏁堝簲鏇茬嚎鍙煡闃呭埌鍙互鍑嗙‘婊村畾鍚勭閲戝睘绂诲瓙鐨勬渶楂?/p>
pH
鍊煎拰鍚勮嚜鐨勪笉绋冲畾甯告暟锛?/p>
锛?/p>
D
锛夋贩鍚堥厤鍚堟晥搴旂郴鏁拌秺澶э紝鍒欓厤鍚堢墿瓒婄ǔ瀹氥�?/p>
5
锛?/p>
EDTA
鐨勯吀鏁堝簲绯绘暟
伪
鍦ㄤ竴瀹氶吀搴︿笅绛変簬
锛?/p>
A
锛?/p>
锛?/p>
Y
4-
锛?/p>
/
锛?/p>
Y鈥?/p>
锛?/p>
锛?/p>
锛?/p>
B
锛?/p>
锛?/p>
Y鈥?/p>
锛?/p>
/
锛?/p>
Y
4-
锛?/p>
锛?/p>
锛?/p>
C
锛?/p>
锛?/p>
H
+
锛?/p>
/
锛?/p>
Y鈥?/p>
锛?/p>
锛?/p>
( D )
锛?/p>
Y鈥?/p>
锛?/p>
/
锛?/p>
H
4
Y
锛?/p>
銆?/p>
6
锛庢煇婧舵恫涓昏鍚湁
Ca
2+
銆?/p>
Mg
2+
鍙婂皯閲?/p>
Fe
3+
锛?/p>
Al
3+
銆傚姞鍏ヤ笁涔欓唶鑳哄悗锛屽湪
pH
锛?/p>
10
鏃讹紝浠ラ摤
榛?/p>
T
涓烘寚绀哄墏锛岀敤
EDTA
婊村畾锛屽垯娴嬪嚭鐨勬槸
锛?/p>
A
锛?/p>
Mg
2+
鍚噺锛?/p>
锛?/p>
B
锛?/p>
Ca
2+
鍚噺锛?/p>
锛?/p>
C
锛?/p>
Mg
2+
鍜?/p>
Ca
2+
鐨勬�婚噺锛?/p>
锛?/p>
D
锛?/p>
Fe
3+
锛?/p>
Al
3+
锛?/p>
Ca
2+
锛?/p>
Mg
2+
鎬婚噺銆?/p>
7
锛庢祴瀹氭�荤‖搴︽椂锛岀敤閾粦
T
涓烘寚绀哄墏鏃讹紝婧舵恫鍛堣摑鑹蹭负缁堢偣锛岃繖钃濊壊鍖栧悎涓?/p>
锛?/p>
A
锛?/p>
MY
锛?/p>
锛?/p>
B
锛?/p>
MIn
锛?/p>
锛?/p>
C
锛?/p>
H
4
Y
锛?/p>
锛?/p>
D
锛?/p>
In
銆?/p>
涓夛紟鍒ゆ柇锛?/p>
1
锛庝互
EDTA
涓烘淮瀹氬墏锛屼笉璁烘憾娑?/p>
PH
鍊肩殑澶у皬锛屽彧褰㈡垚
MY
涓�绉嶅舰寮忕殑閰嶅悎鐗┿�?/p>
2
锛?/p>
鍒嗗埆婊村畾娣峰悎婧舵恫涓?/p>
Pb
2+
銆?/p>
Cu
2+
绂诲瓙鐨勬柟娉曟槸鎺у埗婧舵恫鐨勯吀搴︼紝
鐢?/p>
EDTA
浣滄爣鍑嗘憾娑叉淮瀹氥�?/p>
3
锛庨噾灞炴寚绀哄墏涓庨噾灞炵瀛愬舰鎴愮殑鏈夎壊閰嶅悎鐗╄鏈夐�傚綋鐨勭ǔ瀹氭�с�?/p>
4
锛?/p>
浠?/p>
EDTA
婊村畾閲戝睘绂诲瓙
M
锛?/p>
褰卞搷婊村畾鏇茬嚎鍖栧璁￠噺鐐瑰悗绐佽穬鑼冨洿澶у皬鐨勪富瑕佸洜绱犳槸
EDTA
鐨勯吀鏁堝簲銆?/p>
鍥涳紟鍥炵瓟闂锛?/p>