CN103558168A - 氟化物含量的检测方法 - Google Patents
氟化物含量的检测方法 Download PDFInfo
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Abstract
氟化物含量的检测方法,其特征在于取1-2ml氟化物标准溶液于10ml具塞闭塞管中,加纯水至5.0ml,加氟试剂溶液1.00ml,缓冲溶液0.40ml,硝酸镧溶液1.00ml,摇匀,加丙酮2.00ml,加纯水定容至10.00ml,混匀,同时做试剂空白,放置1h后1cm比色皿,以试剂空白为参比,620nm处测定吸光度值。本方法减少了水样和试剂用量,特别是节约了大量有机溶剂,降低了检验成本;产生的废液大大减少,降低了处理废液的费用,减少了对环境的污染且本方法操作更简便,灵敏度和准确度均较好。
Description
技术领域
本发明涉及氟化物检测技术领域,特别涉及氟化物含量的检测方法。
背景技术
氟化物在自然界广泛存在适量的氟被认为是对人体有益的元素摄入量过多对人体有害可致急慢性中毒,慢性中毒主要表现为氟斑牙和氟骨症,水中的氟化物具有易溶性90%以上可被人体直接吸收,是人体内氟的主要来源,当饮水中氟低于0.5mg/L时易发生龋齿,当饮水中氟高于1.5mg/L时易发生氟斑牙当饮水中氟高于3.0mg/L时易发生氟骨症,生活饮用水卫生标准规定饮用水氟的限量值为1.0mg/L
检测氟化物方法有离子选择电极法、离子色谱氟试剂分光光度法、双波长系数倍率氟试剂分、光光度法、锆盐茜素比色法等目前大多数实验室采用离子色谱法、水样中待测阴离子随碳酸盐重碳酸盐淋洗液进入离子交换柱系统、根据分离柱对各阴离子的不同亲和度进行分离、已分离的阴离子流经阳离子交换柱或抑制器系统转换成具有高电导度的强酸淋洗液则转变为弱电导度的碳酸,由电导检测器测量各阴离子组分的电导率以相对保留时间峰高及面积来定性和定量。
发明内容
本发明的提供一种环保且操作简便的方法,氟化物含量的检测方法,其特征在于取1-2ml氟化物标准溶液于10ml具塞闭塞管中,加纯水至5.0ml,加氟试剂溶液1.00ml,缓冲溶液0.40ml,硝酸镧溶液1.00ml,摇匀,加丙酮2.00ml,加纯水定容至10.00ml,混匀,同时做试剂空白,放置1h后1cm比色皿,以试剂空白为参比,620nm处测定吸光度值。
所述氟化物标准使用液浓度为1μg/ml。
所述缓冲溶液和硝酸镧溶液浓度为0.5mol/L。
所述缓冲溶液为磷酸氢二钾。
本方法减少了水样和试剂用量,特别是节约了大量有机溶剂,降低了检验成本;产生的废液大大减少,,降低了处理废液的费用,减少了对环境的污染且本方法操作更简便,灵敏度和准确度均较好
具体实施方式
下述非限制性实施例可以使本领域的普通技术人员更全面地理解本发明,但不以任何方式限制本发明。
实施例1
氟化物含量的检测方法,其特征在于取1-2ml氟化物标准溶液于10ml具塞闭塞管中,加纯水至5.0ml,加氟试剂溶液1.00ml,缓冲溶液0.40ml,硝酸镧溶液1.00ml,摇匀,加丙酮2.00ml,加纯水定容至10.00ml,混匀,同时做试剂空白,放置1h后1cm比色皿,以试剂空白为参比,620nm处测定吸光度值。所述氟化物标准使用液浓度为1μg/ml,所述缓冲溶液和硝酸镧溶液浓度为0.5mol/L。配备不同组浓度水平的氟化物溶液,每个浓度采用本发明方法重复测量六次,根据测定结果可计算出精密度,见下表,从表中三个浓度水平下数据结果可以看出,本发明方法的精密度很好,相对标准偏差很小。
Claims (4)
1.氟化物含量的检测方法,其特征在于取1-2ml氟化物标准溶液于10ml具塞闭塞管中,加纯水至5.0ml,加氟试剂溶液1.00ml,缓冲溶液0.40ml,硝酸镧溶液1.00ml,摇匀,加丙酮2.00ml,加纯水定容至10.00ml,混匀,同时做试剂空白,放置1h后1cm比色皿,以试剂空白为参比,620nm处测定吸光度值。
2.根据权利要求1所述的氟化物含量的检测方法,其特征在于所述氟化物标准使用液浓度为1μg/ml。
3.根据权利要求1所述的氟化物含量的检测方法,其特征在于所述缓冲溶液和硝酸镧溶液浓度为0.5mol/L。
4.根据权利要求1所述的氟化物含量的检测方法,其特征在于所述缓冲溶液为磷酸氢二钾。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104535514A (zh) * | 2014-12-26 | 2015-04-22 | 杭州霆科生物科技有限公司 | 一种检测氟化物的微流控芯片及其制备方法 |
CN109238983A (zh) * | 2018-09-06 | 2019-01-18 | 哈尔滨医科大学 | 一种用于检测微量样本中氟离子含量的试剂盒 |
CN111122782A (zh) * | 2019-12-26 | 2020-05-08 | 洛阳森蓝化工材料科技有限公司 | 一种固体表面氟含量的分析方法 |
CN113484260A (zh) * | 2021-07-07 | 2021-10-08 | 山东中节能天融环保技术有限公司 | 分光光度法测定水中氟化物的方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104535514A (zh) * | 2014-12-26 | 2015-04-22 | 杭州霆科生物科技有限公司 | 一种检测氟化物的微流控芯片及其制备方法 |
CN109238983A (zh) * | 2018-09-06 | 2019-01-18 | 哈尔滨医科大学 | 一种用于检测微量样本中氟离子含量的试剂盒 |
CN111122782A (zh) * | 2019-12-26 | 2020-05-08 | 洛阳森蓝化工材料科技有限公司 | 一种固体表面氟含量的分析方法 |
CN113484260A (zh) * | 2021-07-07 | 2021-10-08 | 山东中节能天融环保技术有限公司 | 分光光度法测定水中氟化物的方法 |
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