\u6c34\u8d28\u76d1\u6d4b<\/a>\u4e2d\u5b9e\u9a8c10 \u603b\u786c\u5ea6\u6d4b\u5b9a<\/p>\n\n\n\n\u3000\u30001.\u5b9e\u9a8c\u76ee\u7684\uff1a<\/p>\n\n\n\n
\u3000\u3000(1)\u4e86\u89e3\u7528EDTA\u914d\u4f4d\u6ef4\u5b9a\u6cd5\u6d4b\u5b9a\u6c34\u4e2d\u603b\u786c\u5ea6\u7684\u57fa\u672c\u539f\u7406\u548c\u64cd\u4f5c\u65b9\u6cd5\u3002<\/p>\n\n\n\n
\u3000\u3000(2)\u719f\u6089\u94ec\u9ed1T\u6307\u793a\u5242\u7684\u4f7f\u7528\u53ca\u5176\u7ec8\u70b9\u989c\u8272\u53d8\u5316\u3002<\/p>\n\n\n\n
\u3000\u3000(3)\u638c\u63e1EDTA\u4e8c\u94a0\u6807\u51c6\u6eb6\u6db2\u6d53\u5ea6\u7684\u6807\u5b9a\u65b9\u6cd5\u3002<\/p>\n\n\n\n
\u3000\u30002.\u5b9e\u9a8c\u539f\u7406\uff1a<\/p>\n\n\n\n
\u3000\u3000\u5728pH=10\u7684\u6761\u4ef6\u4e0b\uff0cEDTA\u4e8c\u94a0\u76d0\u548c\u6c34\u4e2d\u7684Ca2+\u53caMg2+\u751f\u6210\u7a33\u5b9a\u7684\u914d\u5408\u7269\uff0cCa2+\u53caMg2+\u4e5f\u80fd\u4e0e\u94ec\u9ed1T\u6307\u793a\u5242\u751f\u6210\u7d2b\u7ea2\u8272\u7684\u914d\u5408\u7269\uff0c\u4f46\u7a33\u5b9a\u6027\u4e0d\u5982\u524d\u8005\u3002\u5f53EDTA\u4e8c\u94a0\u4e0e\u6c34\u4e2dCa2+\u53caMg2+\u4f5c\u7528\u5b8c\u5168\u4ee5\u540e\uff0c\u7ee7\u7eed\u6ef4\u5165\u7684EDTA\u4e8c\u94a0\u4fbf\u593a\u53d6\u7d2b\u7ea2\u8272\u914d\u5408\u7269\u4e2d\u7684Ca2+\u53caMg2+\uff0c\u4ece\u800c\u4f7f\u94ec\u9ed1T\u6307\u793a\u5242\u6e38\u79bb\u51fa\u6765\uff0c\u6eb6\u6db2\u7531\u7d2b\u7ea2\u8272\u53d8\u4e3a\u4eae\u84dd\u8272\uff0c\u5373\u4e3a\u6ef4\u5b9a\u7ec8\u70b9\u3002<\/p>\n\n\n\n
\u3000\u30003.\u5b9e\u9a8c\u8bd5\u5242\uff1a<\/p>\n\n\n\n
\u3000\u3000(1)\u6c28\u7f13\u51b2\u6eb6\u6db2\uff1a\u79f0\u53d616.9g\u5206\u6790\u7eaf\u6c2f\u5316\u94f5(NH4Cl)\u6eb6\u4e8e\u5c11\u91cf\u84b8\u998f\u6c34\u4e2d\uff0c\u52a0\u5165143mL\u5206\u6790\u7eaf\u6c28\u6c34(\u03c120=0.88g\/mL)\uff0c\u7136\u540e\u7528\u84b8\u998f\u6c34\u7a00\u91ca\u81f31L\u3002\u79f0\u53d61.25gMgEDTA\uff0c\u914d\u5165250mL\u7f13\u51b2\u6eb6\u6db2\u4e2d\u3002<\/p>\n\n\n\n
\u3000\u3000(2)\u94ec\u9ed1T\u6307\u793a\u5242\uff1a\u79f0\u53d6\u94ec\u9ed1T0.5g\u6eb6\u4e8e10mL\u4e0a\u8ff0\u6c28\u7f13\u51b2\u6eb6\u6db2\u4e2d\uff0c\u7136\u540e\u52a0\u65e0\u6c34\u4e59\u9187\u7a00\u91ca\u81f3100mL\uff0c\u7f6e\u4e8e\u68d5\u8272\u74f6\u4e2d\u3002\u6b64\u6eb6\u6db2\u5728\u51b0\u7bb1\u4fdd\u5b58\uff0c\u6709\u6548\u671f\u7ea61\u4e2a\u6708\u3002\u7528\u4e0b\u9762\u7684\u65b9\u6cd5\u914d\u5236\u5f97\u56fa\u4f53\u6307\u793a\u5242\u53ef\u8f83\u957f\u671f\u4fdd\u5b58\uff1a\u4ee50.5g\u94ec\u9ed1T\u548c100g\u56fa\u4f53\u6c2f\u5316\u94a0(\u5206\u6790\u7eaf)\uff0c\u5728\u7814\u94b5\u4e2d\u7814\u78e8\u5747\u5300\uff0c\u8d2e\u4e8e\u68d5\u8272\u74f6\u5185\u4fdd\u5b58\u3002<\/p>\n\n\n\n
\u3000\u3000(3)10%\u5206\u6790\u7eaf\u6c28\u6c34\u6eb6\u6db2\u3002<\/p>\n\n\n\n
\u3000\u3000(4)1:1\u76d0\u9178\u6eb6\u6db2\u3002<\/p>\n\n\n\n
\u3000\u3000(5)EDTA\u4e8c\u94a0\u6807\u51c6\u6eb6\u6db2(C\u22480.01mol\/L)\uff1a\u5c06EDTA\u4e8c\u94a0\u4e8c\u6c34\u5408\u7269(C10H14N2O8Na2\u00b72H2O)\u572880\u2103\u5e72\u71e5\uff0c\u653e\u5165\u5e72\u71e5\u5668\u4e2d\u51b7\u81f3\u5ba4\u6e29\uff0c\u79f0\u53d63.7250g\u6eb6\u4e8e\u6c34\uff0c\u5728\u5bb9\u91cf\u74f6\u4e2d\u5b9a\u5bb9\u81f31000mL\uff0c\u76db\u653e\u5728\u805a\u4e59\u70ef\u74f6\u4e2d\uff0c\u5b9a\u671f\u6821\u5bf9\u5176\u6d53\u5ea6\u3002<\/p>\n\n\n\n
\u3000\u3000(6)\u91d1\u5c5e\u950c(\u542b\u950c99.9%\u4ee5\u4e0a)\uff1a\u5148\u7528\u7a00\u76d0\u9178\u6d17\u53bb\u8868\u9762\u6c27\u5316\u7269\uff0c\u7136\u540e\u5148\u7528\u6c34\u6f02\u6d17\u5e72\u51c0\uff0c\u518d\u7528\u4e19\u916e\u6f02\u6d17\uff0c\u6ca5\u5e72\u540e\u4e8e110\u2103\u4e0b\u70d85min\u5907\u7528\u3002<\/p>\n\n\n\n
\u3000\u3000(7)\u950c\u6807\u51c6\u6eb6\u6db2(CZn2+=0.010mol\/L)\uff1a\u51c6\u786e\u79f0\u53d60.653g\u4e0a\u8ff0\u91d1\u5c5e\u950c\uff0c\u4e8e100mL\u70e7\u676f\u4e2d\uff0c\u52a0\u51656mL1+1\u76d0\u9178\u6eb6\u6db2\uff0c\u76d6\u4e0a\u8868\u9762\u76bf\uff0c\u5728\u6c34\u6d74\u4e0a\u52a0\u70ed(\u53ef\u52a0\u6570\u6ef4\u8fc7\u6c27\u5316\u6c22\u52a0\u901f\u6eb6\u89e3)\uff0c\u5f85\u5b8c\u5168\u6eb6\u89e3\u540e\uff0c\u79fb\u51651L\u5bb9\u91cf\u74f6\u4e2d\uff0c\u52a0\u84b8\u998f\u6c34\u81f3\u523b\u5ea6\uff0c\u6df7\u5300\u3002\u6839\u636e\u4e0b\u5f0f\u8ba1\u7b97\u950c\u6807\u51c6\u6eb6\u6db2\u7684\u51c6\u786e\u6d53\u5ea6\uff1a<\/p>\n\n\n\n