CN106680228A - 一种紫外‑可见分光光度法快速测定水中有效氯的方法 - Google Patents
一种紫外‑可见分光光度法快速测定水中有效氯的方法 Download PDFInfo
- Publication number
- CN106680228A CN106680228A CN201611030479.9A CN201611030479A CN106680228A CN 106680228 A CN106680228 A CN 106680228A CN 201611030479 A CN201611030479 A CN 201611030479A CN 106680228 A CN106680228 A CN 106680228A
- Authority
- CN
- China
- Prior art keywords
- absorbance
- chlorine
- water
- effective
- ultraviolet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000000460 chlorine Substances 0.000 title claims abstract description 67
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000870 ultraviolet spectroscopy Methods 0.000 title claims abstract description 20
- 238000002835 absorbance Methods 0.000 claims abstract description 40
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 23
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000012417 linear regression Methods 0.000 claims abstract description 7
- 239000010453 quartz Substances 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 claims description 10
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 5
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 abstract description 12
- 239000005708 Sodium hypochlorite Substances 0.000 abstract description 2
- 239000000645 desinfectant Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 20
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 14
- 229910052740 iodine Inorganic materials 0.000 description 14
- 239000011630 iodine Substances 0.000 description 14
- 239000003381 stabilizer Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005375 photometry Methods 0.000 description 3
- 230000001568 sexual effect Effects 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YRIZYWQGELRKNT-UHFFFAOYSA-N 1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione Chemical compound ClN1C(=O)N(Cl)C(=O)N(Cl)C1=O YRIZYWQGELRKNT-UHFFFAOYSA-N 0.000 description 1
- QNGVNLMMEQUVQK-UHFFFAOYSA-N 4-n,4-n-diethylbenzene-1,4-diamine Chemical compound CCN(CC)C1=CC=C(N)C=C1 QNGVNLMMEQUVQK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- MSFGZHUJTJBYFA-UHFFFAOYSA-M sodium dichloroisocyanurate Chemical compound [Na+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O MSFGZHUJTJBYFA-UHFFFAOYSA-M 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 229950009390 symclosene Drugs 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
本申请涉及一种紫外‑可见分光光度法快速测定水中有效氯的方法,包括如下步骤为:步骤1:选取容量为10mL的比色管;步骤2:在该比色管中依次加入有效氯溶液0.03mg/L~5mg/L、(3+100)硫酸溶液0.5ml~2ml、(10~50g/L)碘化钾溶液0.5ml~1ml、无水乙醇0.5ml~4ml,延时20秒~120秒;步骤3:用纯水代替有效氯溶液,其余试剂按步骤2添加,摇匀,作为试剂空白;步骤4:在紫外‑可见分光光度计上,用10毫米石英比色皿,以纯水作为参比,在波长430纳米处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm‑A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.05~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;步骤5:另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,按步骤1到步骤4相同的操作测定吸光度;步骤6:计算出水样中有效氯的含量。
Description
技术领域
本发明涉及一种水中有效氯的测定方法,特别是一种紫外-可见分光光度法快速测定水中有效氯的方法。
背景技术
有效氯是指氯化物中以正价存在的氯(定量地说,有效氯含量是指含氯化合物中氧化态氯的百分含量)。目前用作自来水消毒的含氯消毒剂主要有:液氯(HOCl)、二氧化氯(ClO2)、氯胺(NH2Cl)、次氯酸钠(NaClO)、有机氯化合物(如二氯异氰尿酸钠、三氯异氰尿酸、氯铵T等)等。从1974年发现氯消毒会产生具有致突变和致癌性的三氯甲烷以来,国际饮用水界研究消毒副产物己经将近40年。目前,已知消毒副产物在500种以上,集中研究的有21种,因此测定水中有效氯含量,对做好饮水消毒工作和保证水卫生学安全极为重要。因此研究建立一种快速,准确,灵敏度高,低成本低廉的方法测定水中有效氯含量的新方法有重要的意义。
目前,有效氯的测定方法主要有碘量法、N,N-二乙基-1,4-苯二胺硫酸亚铁铵滴定法、N,N-二乙基-1,4-苯二胺光度法、化学传感器法等,但是这些方法要么操作繁琐、耗时,要么试剂耗量大、仪器昂贵;紫外-可见分光光度法具有分析速度快、操作简便、重复性好、分析精度高等优点,在水质分析中应用广泛。但是以碘化钾还原有效氯生成碘单质,通过测定碘的吸光度间接测定水中有效氯的含量却尚未见报道。
现有技术中测定有效氯的技术主要是滴定法,该法试剂耗量大、操作繁琐、测定周期长,且无法实现实时监测。现有的技术也有分光光度法(N,N-二乙基-1,4-苯二胺光度法),但是这个方法与本发明原理不一样,而且N,N-二乙基-1,4-苯二胺光度法所用试剂种类多,耗量大,单个样品测定时间长。报导有利用分光光度法测定碘含量的相关文献,但在生成碘单质后均需加入特定的显色剂。
发明内容
本发明的目的就是为了解决背景技术中的问题,提供一种紫外-可见分光光度法快速测定水中有效氯的方法,其具有能够快速、准确测定水中有效氯的特点。
为达到上述目的,本发明采用如下技术方案:一种紫外-可见分光光度法快速测定水中有效氯的方法,包括如下步骤:
步骤1:选取容量为10mL的比色管;
步骤2:在该比色管中依次加入有效氯溶液0.03mg/L~5mg/L、(3+100)硫酸溶液0.5ml~2ml、1ml 10~50g/L碘化钾溶液、无水乙醇0.5~4ml,延时20秒~120秒;
步骤3:用纯水代替有效氯溶液,其余试剂按步骤2添加,摇匀,作为试剂空白;
步骤4:在紫外-可见分光光度计上,用10毫米石英比色皿,以纯水作为参比,在波长430纳米处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm-A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.05~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;
步骤5:另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,按步骤1到步骤4相同的操作测定吸光度;
步骤6:计算出水样中有效氯的含量。
对于本发明的一种优化,所述一种紫外-可见分光光度法快速测定水中有效氯的方法,具体步骤为:
步骤1:选取容量为10mL的比色管;
步骤2:在该比色管中依次加入有效氯溶液5mg/L、(3+100)硫酸溶液1.0ml、10~50g/L碘化钾溶液1.0ml、无水乙醇2.0ml,延时60秒;
步骤3:用纯水代替有效氯溶液,其余试剂按步骤2添加,摇匀,作为试剂空白;
步骤4:在紫外-可见分光光度计上,用10毫米石英比色皿,以纯水作为参比,在波长430纳米处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm-A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.05~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;
步骤5:另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,按步骤1到步骤4相同的操作测定吸光度;
步骤6:计算出水样中有效氯的含量。
在酸性条件下,有效氯与过量的还原剂(碘化钾)发生反应,生成碘单质,加入一定量的稳定剂使碘单质短期内能够稳定保存于水溶液中而不易于挥发,在特定波长下通过测量水溶液的吸光度A以及校准曲线(C-A)可准确测定水中有效氯的含量。
本发明与背景技术相比,具有单个样品测定耗时少,且在分析过程中加入了无水乙醇作为稳定剂,可避免反应生成的碘单质挥发,因此最低检测浓度可达到0.05mg/L;而且,该方法操作简易,试剂耗量小,毒性小,符合批量样品的测定,适宜推广;紫外-可见分光光度法具有分析速度快、操作简便、重复性好、分析精度高等优点
具体实施方式
实施例1:一种紫外-可见分光光度法快速测定水中有效氯的方法,具体步骤为:
步骤1:选取容量为10mL的比色管;
步骤2:在该比色管中依次加入有效氯溶液0.03mg/L~5mg/L、(3+100)硫酸溶液0.5ml~2ml、(10~50g/L)碘化钾溶液0.5ml~1ml、无水乙醇0.5ml~4ml,延时20秒~120秒;
步骤3:用纯水代替有效氯溶液,其余试剂按步骤2添加,摇匀,作为试剂空白;
步骤4:在紫外-可见分光光度计上,用10毫米石英比色皿,以纯水作为参比,在波长430纳米处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm-A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.05~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;
步骤5:另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,按步骤1到步骤4相同的操作测定吸光度;
步骤6:计算出水样中有效氯的含量。
本申请采用了基于紫外-可见分光光度法的在线分析仪测定水中有效氯的含量。其化学反应原理如下:
2H++ClO-+2I-=I2+Cl-+H2O
由于碘单质(I2)在水溶液中呈棕色,但较易挥发损失,本发明采取了加入稳定剂使碘单质(I2)稳定的保存于水溶液中;在一定范围内碘单质(I2)溶液颜色的深浅与有效氯的含量成正比,根据朗伯-比尔定律:
A=K×C×L
在特定波长处进行测定碘单质(I2)的吸光度A,通过标准曲线校正,即可测定水中有效氯的含量。
本申请在试剂配方中采用了稳定剂作为碘单质的稳定剂,使碘单质稳定保存于水溶液中,确保吸光度A的稳定,从而保证水样中有效氯结果的准确稳定。利用稳定剂减少水溶液中碘单质(I2)的挥发损失。以碘化钾还原有效氯生成碘单质,通过测定碘的吸光度间接测定水中有效氯的含量却尚未见报道。
实施例2:在实施例1的基础上,于10mL比色管中依次加入5.0mL的有效氯溶液,1.0ml的(3+100)硫酸溶液,1.0ml 50g/L的碘化钾溶液,2.0ml无水乙醇;以不加有效氯溶液的溶液为试剂空白,纯水定容至刻度,摇匀;于紫外-可见分光光度计上,用10mm石英比色皿,以纯水作为参比,在波长430nm处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm-A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.03~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,依实验方法测定吸光度,计算出水样中有效氯的含量,并进行回收率实验,结果见表1。
表1水样分析结果及回收率(n=5)
需要理解到的是:本实施例虽然对本发明作了比较详细的说明,但是这些说明,只是对本发明的简单说明,而不是对本发明的限制,任何不超出本发明实质精神内的发明创造,均落入本发明的保护范围内。
Claims (2)
1.一种紫外-可见分光光度法快速测定水中有效氯的方法,其特征是包括如下步骤为:
步骤1:选取容量为10mL的比色管;
步骤2:在该比色管中依次加入有效氯溶液0.03mg/L~5mg/L、(3+100)硫酸溶液0.5ml~2ml、(10~50g/L)碘化钾溶液0.5ml~1ml、无水乙醇0.5ml~4ml,延时20秒~120秒;
步骤3:用纯水代替有效氯溶液,其余试剂按步骤2添加,摇匀,作为试剂空白;
步骤4:在紫外-可见分光光度计上,用10毫米石英比色皿,以纯水作为参比,在波长430纳米处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm-A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.05~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;
步骤5:另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,按步骤1到步骤4相同的操作测定吸光度;
步骤6:计算出水样中有效氯的含量。
2.根据权利要求1所述的紫外-可见分光光度法快速测定水中有效氯的方法,其特征在于包括如下步骤:
步骤1:选取容量为10mL的比色管;
步骤2:在该比色管中依次加入有效氯溶液5mg/L、(3+100)硫酸溶液1.0ml、10~50g/L碘化钾溶液1.0ml、无水乙醇2.0ml,延时60秒;
步骤3:用纯水代替有效氯溶液,其余试剂按步骤2添加,摇匀,作为试剂空白;
步骤4:在紫外-可见分光光度计上,用10毫米石英比色皿,以纯水作为参比,在波长430纳米处分别测定含有效氯溶液的吸光度值A430nm和试剂空白的吸光度A0,计算吸光度差值ΔA430nm=A430nm-A0值,其吸光度差值ΔA430nm与有效氯浓度C在0.05~5mg/L范围内成线性关系,线性回归方程为:ΔA430nm=0.122c+0.0015,相关系数r=0.9994,检出限为0.012mg/L;
步骤5:另取两个经次氯酸钠消毒剂消毒之后的水样各5mL,按步骤1到步骤4相同的操作测定吸光度;
步骤6:计算出水样中有效氯的含量。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611030479.9A CN106680228A (zh) | 2016-11-16 | 2016-11-16 | 一种紫外‑可见分光光度法快速测定水中有效氯的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611030479.9A CN106680228A (zh) | 2016-11-16 | 2016-11-16 | 一种紫外‑可见分光光度法快速测定水中有效氯的方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106680228A true CN106680228A (zh) | 2017-05-17 |
Family
ID=58866668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611030479.9A Pending CN106680228A (zh) | 2016-11-16 | 2016-11-16 | 一种紫外‑可见分光光度法快速测定水中有效氯的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106680228A (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108414465A (zh) * | 2018-02-05 | 2018-08-17 | 清华大学 | 一种再生水中氯活性物质及余氯衰减的测定和预测方法 |
CN108918449A (zh) * | 2018-07-13 | 2018-11-30 | 河南工业大学 | 一种基于紫外-可见分光光度法的稻谷黄变度检测方法 |
CN110333196A (zh) * | 2019-07-17 | 2019-10-15 | 天津城建大学 | 一种测定层状二硫化钼分散液浓度的方法 |
CN113252594A (zh) * | 2021-03-16 | 2021-08-13 | 同济大学 | 一种利用uv吸光度监测预警消毒副产物的方法 |
CN114280045A (zh) * | 2021-12-27 | 2022-04-05 | 广州净朗源环保科技有限公司 | 一种基于含氯消毒液的有效氯浓度在线检测方法 |
-
2016
- 2016-11-16 CN CN201611030479.9A patent/CN106680228A/zh active Pending
Non-Patent Citations (3)
Title |
---|
孙媚华 等: "《紫外_可见分光光度法测定单质碘含量》", 《仲恺农业工程学院学报》 * |
杨卫权 等: "《氯和二氧化氯的快速测定》", 《华东交通大学学报》 * |
顾克强: "《溴甲酚紫褪色光度法测定食盐中的碘》", 《辽宁化工》 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108414465A (zh) * | 2018-02-05 | 2018-08-17 | 清华大学 | 一种再生水中氯活性物质及余氯衰减的测定和预测方法 |
CN108414465B (zh) * | 2018-02-05 | 2020-07-10 | 清华大学 | 一种再生水中氯活性物质及余氯衰减的测定和预测方法 |
CN108918449A (zh) * | 2018-07-13 | 2018-11-30 | 河南工业大学 | 一种基于紫外-可见分光光度法的稻谷黄变度检测方法 |
CN110333196A (zh) * | 2019-07-17 | 2019-10-15 | 天津城建大学 | 一种测定层状二硫化钼分散液浓度的方法 |
CN113252594A (zh) * | 2021-03-16 | 2021-08-13 | 同济大学 | 一种利用uv吸光度监测预警消毒副产物的方法 |
CN114280045A (zh) * | 2021-12-27 | 2022-04-05 | 广州净朗源环保科技有限公司 | 一种基于含氯消毒液的有效氯浓度在线检测方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106680228A (zh) | 一种紫外‑可见分光光度法快速测定水中有效氯的方法 | |
Aieta et al. | Determination of chlorine dioxide, chlorine, chlorite, and chlorate in water | |
Huo et al. | A fluorescein-based highly specific colorimetric and fluorescent probe for hypochlorites in aqueous solution and its application in tap water | |
Demutskaya et al. | Photometric determination of ammonium nitrogen with the nessler reagent in drinking water after its chlorination | |
Duan et al. | A selective fluorescence quenching method for the determination of trace hypochlorite in water samples with nile blue A | |
Kádár et al. | Spectrophotometric determination of the dissociation constants of crown ethers with grafted acridone unit in methanol based on Benesi-Hildebrand evaluation | |
JP4944740B2 (ja) | 亜塩素酸イオンの測定方法 | |
US9746451B2 (en) | Kinetic chlorine measurement | |
CN105606554A (zh) | 一种水中游离氯和总氯测定方法 | |
US6777242B1 (en) | Aqueous solution based on an azo dye, process for its manufacture and use thereof | |
Xin et al. | Highly selective spectrophotometric determination of chlorine dioxide in water using Rhodamine B | |
JP6777915B2 (ja) | 分析方法および分析装置 | |
JP2017032503A (ja) | 残留塩素測定システム、残留塩素測定方法、及びプログラム | |
CN103383356A (zh) | 一种快速测定饮用水中氯酸盐的方法 | |
Kinani et al. | A Critical Review on Chemical Speciation of Chlorine-Produced Oxidants (CPOs) in Seawater. Part 2: Sampling, Sample Preparation and Non-Chromatographic and Mass Spectrometric-Based Methods | |
CN103472015A (zh) | 基于碘-淀粉显色体系动态吸光度定量分析法 | |
CN103018184B (zh) | 一种测定水中痕量溴酸盐的方法 | |
Olenin et al. | Sols of silver nanoparticles as analytical reagents for the determination of active chlorine in water samples by spectrophotometry and photometric titration | |
JP6953521B2 (ja) | 試薬ベースラインを用いた化学種の濃度を測定するための方法 | |
Tkáčová et al. | Determination of chlorine dioxide and chlorite in water supply systems by verified methods | |
US10940474B2 (en) | Oxidant sensor | |
Mahadevaiah et al. | Simple spectrophotometric method for the determination of sulfur dioxide by its decolorizing effect on the peroxovanadate complex | |
Gao et al. | Improved Determination of Mercury Complex with Thiomicher’s Ketone by β-Correction Spectrophotometry | |
CN105445265B (zh) | 永久性余氯标准比色系列溶液的制备方法 | |
US20170167971A1 (en) | Method of expanding the measurement range of photometric systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170517 |