CN104596948A - Measurement of heavy metals in a water body environment by utilization of flame atomic absorption spectrophotometry - Google Patents
Measurement of heavy metals in a water body environment by utilization of flame atomic absorption spectrophotometry Download PDFInfo
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- CN104596948A CN104596948A CN201310533266.8A CN201310533266A CN104596948A CN 104596948 A CN104596948 A CN 104596948A CN 201310533266 A CN201310533266 A CN 201310533266A CN 104596948 A CN104596948 A CN 104596948A
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- atomic absorption
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- water body
- heavy metal
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Abstract
Measurement of heavy metals in a water body environment by utilization of flame atomic absorption spectrophotometry is provided. The measurement is characterized by including: collecting a sample to be measured, putting the sample into a digestion tank, adding 5 mL of concentrated hydrochloric acid, 5 mL of hydrofluoric acid and 5 mL of perchloric acid, mixing uniformly, putting the digestion tank into a digester, digesting for 20 min, drying, cooling, transferring the solution into a volumetric flask having a volume of 50 mL, adding to a constant volume, shaking to obtain a uniform solution, filtering into a colorimetric pipe, and comparing with a blank sample and analyzing by utilization of a flame atomic absorption spectrophotometer. Precision and accuracy of measuring zinc, copper, lead, cadmium and chromium in a polluted water body by the measurement of the heavy metals in the water body environment by utilization of the flame atomic absorption spectrophotometry are high. The relative standard deviation is 104-471%. The measurement is simple and convenient in operation, small in acid using amount and capable of reducing pollution, and is a preferred method for measuring heavy metals in polluted water.
Description
Technical field
The present invention relates to heavy metal in water detection technique field, particularly utilize Flame Atomic Absorption Spectrometry optical spectroscopy to measure water body environment heavy metal.
Background technology
Heavy metal refers to that proportion is greater than the metal of 4 or 5, about has 45 kinds, as copper, lead, zinc, iron, brill, nickel, manganese, good fortune, mercury, tungsten, aluminium, gold, silver etc.Although the heavy metals such as manganese, copper, zinc are the trace elements required for vital movement, not vital movement institute is necessary for most of heavy metal such as mercury, lead, good fortune etc., and all heavy metals to exceed finite concentration all poisonous to human body.In environmental pollution, said heavy metal mainly refers to the significant heavy elements of bio-toxicity such as copper, zinc, good fortune, lead.Heavy metal can not be biodegradable, on the contrary but can under the biological magnification of food chain, and thousands of hundred times of ground enrichments, finally enter human body.There is strong interaction in heavy metal energy and protein and enzyme etc. in human body, makes them lose activity, also may accumulate in some organ of human body, cause slow poisoning.Heavy metal element is unprocessed for some reason is just discharged into river, lake or ocean, or enters in soil, and these rivers, lake, ocean and soil are polluted, and they can not be biodegradable.If fish or shellfish accumulation heavy metal and eaten by the mankind, or heavy metal absorb by the crops such as paddy, wheat and eaten by the mankind, heavy metal will enter human body makes people produce heavy metal poisoning, and strange illness gently then occurs, and severe one will death.
Summary of the invention
The invention provides a kind of detection limit low heavy metal detection method, utilize Flame Atomic Absorption Spectrometry optical spectroscopy to measure water body environment heavy metal, it is characterized in that, gather testing sample, sample is put into counteracting tank, adds 5mL concentrated hydrochloric acid, 5mL hydrofluorite, 5mL perchloric acid, mixing, counteracting tank is put into counteract appearance, clear up 20min, dry, cooling, moves into constant volume in 50mL volumetric flask by solution, shake up, be filled in color comparison tube and adopt flame atomic absorption spectrophotometer to contrast blank sample analysis.
Water sample sample is taked in described testing sample collection, filters the content removing zinc, chromium, lead, copper or cadmium in method working sample described in impurity.
Described method standard curve determination: the heavy metal standard mixed solution accurately pipetting gradient concentration respectively, in volumetric flask, uses hydrochloric acid solution constant volume, measures solution absorbance value with flame atomic absorption spectrophotometer, drawing standard curve.
The present invention utilizes the preci-sion and accuracy of zinc, copper, lead, cadmium, chromium heavy metal in Flame Atomic Absorption Spectrometry optical spectroscopy mensuration water body environment heavy metal method mensuration polluted-water higher, relative standard deviation is between 104% ~ 471%, easy and simple to handle, with the few decreasing pollution of acid amount, it is the method for optimizing of determining heavy metals in contaminant water.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
Utilize Flame Atomic Absorption Spectrometry optical spectroscopy to measure water body environment heavy metal, it is characterized in that, gather testing sample, sample is put into counteracting tank, adds 5mL concentrated hydrochloric acid, 5mL hydrofluorite, 5mL perchloric acid, mixing, puts into counteract appearance by counteracting tank, clears up 20min, dry, cooling, solution is moved into constant volume in 50mL volumetric flask, shake up, be filled in color comparison tube and adopt flame atomic absorption spectrophotometer to contrast blank sample analysis.Water sample sample is taked in described testing sample collection, filters the content removing zinc, chromium, lead, copper or cadmium in method working sample described in impurity.Described method standard curve determination: the heavy metal standard mixed solution accurately pipetting gradient concentration respectively, in volumetric flask, uses hydrochloric acid solution constant volume, measures solution absorbance value with flame atomic absorption spectrophotometer, drawing standard curve.
Claims (4)
1. utilize Flame Atomic Absorption Spectrometry optical spectroscopy to measure water body environment heavy metal, it is characterized in that, gather testing sample, sample is put into counteracting tank, adds 5mL concentrated hydrochloric acid, 5mL hydrofluorite, 5mL perchloric acid, mixing, puts into counteract appearance by counteracting tank, clear up 20min, dry, cooling, moves into constant volume in 50mL volumetric flask, shakes up by solution, filter, get in filtrate to color comparison tube and adopt flame atomic absorption spectrophotometer to contrast blank sample analysis.
2. the Flame Atomic Absorption Spectrometry optical spectroscopy that utilizes according to claim 1 measures water body environment heavy metal, it is characterized in that water sample sample is taked in described testing sample collection, filters and remove impurity.
3. the Flame Atomic Absorption Spectrometry optical spectroscopy that utilizes according to claim 1 measures water body environment heavy metal, it is characterized in that the content of zinc, chromium, lead, copper or cadmium in described method working sample.
4. the Flame Atomic Absorption Spectrometry optical spectroscopy that utilizes according to claim 1 measures water body environment heavy metal, it is characterized in that described method standard curve determination: accurately pipette the heavy metal standard mixed solution of gradient concentration respectively in volumetric flask, use hydrochloric acid solution constant volume, solution absorbance value is measured, drawing standard curve with flame atomic absorption spectrophotometer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310533266.8A CN104596948A (en) | 2013-10-31 | 2013-10-31 | Measurement of heavy metals in a water body environment by utilization of flame atomic absorption spectrophotometry |
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| CN201310533266.8A CN104596948A (en) | 2013-10-31 | 2013-10-31 | Measurement of heavy metals in a water body environment by utilization of flame atomic absorption spectrophotometry |
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| CN104596948A true CN104596948A (en) | 2015-05-06 |
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| CN201310533266.8A Pending CN104596948A (en) | 2013-10-31 | 2013-10-31 | Measurement of heavy metals in a water body environment by utilization of flame atomic absorption spectrophotometry |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914061A (en) * | 2015-06-19 | 2015-09-16 | 贵州出入境检验检疫局检验检疫综合技术中心 | Method for determining thallium content of agricultural product by flame atomic absorption spectrometry |
| CN107219177A (en) * | 2017-05-31 | 2017-09-29 | 浙江海洋大学 | The method of zinc, copper, total chrome content in METHOD FOR CONTINUOUS DETERMINATION hemipelagic sediment |
| CN109187391A (en) * | 2018-09-17 | 2019-01-11 | 安徽水韵环境检测有限公司 | A kind of detection method and its monitoring system of urban groundwater |
| CN110426358A (en) * | 2019-08-09 | 2019-11-08 | 南通化学环境监测站有限公司 | The Flame Atomic Absorption Spectrometry in Determining of barium in a kind of water quality |
| CN114354307A (en) * | 2021-12-17 | 2022-04-15 | 广西金川有色金属有限公司 | Method for dissolving copper concentrate sample |
-
2013
- 2013-10-31 CN CN201310533266.8A patent/CN104596948A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914061A (en) * | 2015-06-19 | 2015-09-16 | 贵州出入境检验检疫局检验检疫综合技术中心 | Method for determining thallium content of agricultural product by flame atomic absorption spectrometry |
| CN107219177A (en) * | 2017-05-31 | 2017-09-29 | 浙江海洋大学 | The method of zinc, copper, total chrome content in METHOD FOR CONTINUOUS DETERMINATION hemipelagic sediment |
| CN109187391A (en) * | 2018-09-17 | 2019-01-11 | 安徽水韵环境检测有限公司 | A kind of detection method and its monitoring system of urban groundwater |
| CN110426358A (en) * | 2019-08-09 | 2019-11-08 | 南通化学环境监测站有限公司 | The Flame Atomic Absorption Spectrometry in Determining of barium in a kind of water quality |
| CN114354307A (en) * | 2021-12-17 | 2022-04-15 | 广西金川有色金属有限公司 | Method for dissolving copper concentrate sample |
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Application publication date: 20150506 |