CN104865148A - Method for detecting copper content in copper root-removing dripper - Google Patents
Method for detecting copper content in copper root-removing dripper Download PDFInfo
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- CN104865148A CN104865148A CN201510235834.5A CN201510235834A CN104865148A CN 104865148 A CN104865148 A CN 104865148A CN 201510235834 A CN201510235834 A CN 201510235834A CN 104865148 A CN104865148 A CN 104865148A
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- copper
- crucible
- water dropper
- detection method
- root
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Abstract
The invention provides a method for detecting the copper content in a copper root-removing dripper, wherein a carbon thermal reduction method is used. The method comprises the following steps: in a crucible, covering the copper root-removing dripper to be detected with excess carbon black; then putting the dipper into a muffle furnace for reaction at high temperature; obtaining the mass of elemental copper by calculating the weight difference before and after the reaction, so as to further calculate the content of copper in the copper root-removing dripper. The method can accurately determine the content of copper, is simple and feasible and low in cost, and can be used for controlling the production process technology and the product quality.
Description
Technical field
The invention belongs to tenor determination techniques field, especially relate to a kind of copper and to dispel the detection method of copper content in root water dropper.
Background technology
Copper is a kind of metallic chemical element, is also the necessary a kind of trace element of human body, and copper is also one of mankind's metal of finding the earliest, is the widely used a kind of metals of the mankind, belongs to heavy metal.There are some researches show, heavy metal copper is not only the indispensable element of plant growth, can interact with the organic acid of plant secretion again and produce bivalent cupric ion, reach when copper ion accumulated concentrations or when certain limit is interval, coercive inhibiting effect will be produced to crop especially root growth.
Drip irrigation below the surface is one of irrigation technique of economizing on water most in current world wide, it has plurality of advantages, having become one of canonical form of micro irrigation technology application, is the drip irrigation product of new generation representing the future of agriculture development of water saving irrigation trend, will lead China's agricultural water-saving irrigation development new direction.The core parts of drip irrigation below the surface are buried douches, but grow because of the hydrotropism of plant roots, the hair root of crop can be made to enter the weeper of douche, result in blockage, and for addressing this problem, copper root water dropper of dispelling is developed and designs.
The copper number of copper content in root water dropper of dispelling directly affects anti-of water dropper and invades action effect, water dropper cost.Therefore set up and be a kind ofly suitable for low cost, succinctly easy copper that enterprise uses and dispel the detection method of copper content in root water dropper, contribute to enterprise and carry out production technology and end product quality controls, and relevant detection method not yet has clear and definite bibliographical information so far.
Summary of the invention
The object of this invention is to provide a kind of copper to dispel the detection method of copper content in root water dropper, its measurement result is accurate, and assay method is suitable for enterprise for the production of technology controlling and process and quality control.
The technical solution used in the present invention is:
Copper is dispelled the detection method of copper content in root water dropper, comprises the steps:
S1: get a copper to be measured root water dropper of dispelling and weigh, obtain quality m
0;
S2: get one clean or after tested used crucible weigh, obtain quality m
1;
S3: root water dropper of being dispelled by copper to be measured is placed in crucible, and the carbon black getting certain mass adds in crucible, and water dropper is covered, crucible is placed in muffle furnace and calcines 1h ~ 3h, cool under vacuum conditions after calcining;
S4: cleaned by cooled crucible with distilled water, weigh after vacuum drying, obtains the quality m of crucible and elemental copper
2, crucible label is recorded access times, then with packaging film, crucible is wrapped up, prevent the elemental copper on sidewall of crucible oxidized;
S5: calculate copper according to the following equation and to dispel the massfraction of copper in root water dropper:
Wherein, in step S3, the quality of the carbon black added is
n is that crucible access times add 1 and obtain,
in m
2and m
1be test the data obtained (n-1)th time; m
0be the data recorded for n-th time;
S6: repeat step S1-S5, to the water dropper parallel testing of each batch repeatedly, mean value is final copper content.
In order to ensure the accuracy tested, described carbon black is acetylene carbon black, ultra-fine level, ash content≤0.1%.
In order to ensure the accuracy tested, in S3, the calcining heat of muffle furnace is 800-1000 DEG C.
In order to ensure the accuracy tested, use analytical balance of weighing, weighing gained mass figures and retaining after radix point three.
In order to ensure the accuracy tested, access times≤20 time of crucible, crucible uses after more than 20 times, and the crucible that recommended replacement is clean is measured.
In the present invention, the addition formula of carbon black to be dispelled in root water dropper formula major and minor reaction requirement in copper powder addition and Reduction of cupric oxide by carbon and determining according to copper, and content of carbon black reaches excessive and can cover water dropper.It is the situation of 8%-12% that technical scheme of the present invention is particularly useful for the copper scope of copper content in root water dropper of dispelling.In actual mechanical process, after having carried out once mensuration, the elemental copper that charcoal restores covers on sidewall of crucible, when once measuring on this crucible of use carries out, because carbothermic reduction reaction is not carry out under vacuum, so consumed carbon black further by the oxygen oxidation generation cupric oxide in air again in order to avoid last time tests the copper produced, simultaneously also in order to ensure that carbon black is excessive further, when replicate determination many groups, the amount adding carbon black presents increasing trend, effectively ensures the accuracy of copper content testing.
The advantage that the present invention has and good effect are: the present invention adopts carbothermic method, the content of energy Accurate Determining copper, and method is succinctly easy, with low cost, can be used for production process technology and products thereof quality control.
Embodiment
Embodiment 1
To measure copper copper content in root water dropper of dispelling, the present invention is further detailed below.In this embodiment, replicate determination 5 groups of data, are designated as parallel group of 1-5.
Parallel group 1:
1. get a copper to be measured root water dropper of dispelling to weigh on analytical balance, obtain quality m
0=0.325g;
2. choose a clean crucible (subsidiary lid), use analytical balance to be weighed to obtain by crucible quality m
1=31.763g;
3. root water dropper of being dispelled by copper to be measured is placed in crucible, gets 0.2m
0the carbon black of=0.065g adds in crucible, and is covered by water dropper, covers crucible cover, crucible is placed in muffle furnace, 800 DEG C of calcinings 1 hour, after calcining, crucible is placed in vacuum drying chamber and naturally cools;
4. with distilled water, cooled crucible is cleaned, weigh with analytical balance after vacuum drying, obtain the quality m of crucible and elemental copper
2=31.795g, crucible label also records access times 1, uses packaging film to be wrapped up and deposits to treat that next time uses, prevent the elemental copper on sidewall of crucible oxidized.
Parallel group 2
1. get a copper to be measured root water dropper of dispelling to weigh on analytical balance, obtain quality m
0=0.318g;
2. take out parallel group 1 crucible used, use analytical balance to be weighed to obtain by crucible quality m
1=31.797g;
3. root water dropper of being dispelled by copper to be measured is placed in crucible, gets
Carbon black add in crucible, and by water dropper cover, cover crucible cover, crucible be placed in muffle furnace, 800 DEG C calcining 1 hour, after calcining, crucible is placed in vacuum drying chamber and naturally cools;
4. with distilled water, cooled crucible is cleaned, weigh with analytical balance after vacuum drying, obtain the quality m of crucible and elemental copper
2=31.827g, crucible label also records access times 2, uses packaging film to be wrapped up and deposits to treat that next time uses, prevent the elemental copper on sidewall of crucible oxidized.
Parallel group 3
1. get a copper to be measured root water dropper of dispelling to weigh on analytical balance, obtain quality m
0=0.330g;
2. take out parallel group 2 crucible used, use analytical balance to be weighed to obtain by crucible quality m
1=31.830g;
3. root water dropper of being dispelled by copper to be measured is placed in crucible, gets
Carbon black add in crucible, and by water dropper cover, cover crucible cover, crucible be placed in muffle furnace, 800 DEG C calcining 1 hour, after calcining, crucible is placed in vacuum drying chamber and naturally cools;
4. with distilled water, cooled crucible is cleaned, weigh with analytical balance after vacuum drying, obtain the quality m of crucible and elemental copper
2=31.862g, crucible label also records access times 3, uses packaging film to be wrapped up and deposits to treat that next time uses, prevent the elemental copper on sidewall of crucible oxidized.
Parallel group 4
1. get a copper to be measured root water dropper of dispelling to weigh on analytical balance, obtain quality m
0=0.322g;
2. take out parallel group 3 crucible used, use analytical balance to be weighed to obtain by crucible quality m
1=31.862g;
3. root water dropper of being dispelled by copper to be measured is placed in crucible, gets
Carbon black add in crucible, and by water dropper cover, cover crucible cover, crucible be placed in muffle furnace, 800 DEG C calcining 1 hour, after calcining, crucible is placed in vacuum drying chamber and naturally cools;
4. with distilled water, cooled crucible is cleaned, weigh with analytical balance after vacuum drying, obtain the quality m of crucible and elemental copper
2=31.895g, crucible label also records access times 4, uses packaging film to be wrapped up and deposits to treat that next time uses, prevent the elemental copper on sidewall of crucible oxidized.
Parallel group 5
1. get a copper to be measured root water dropper of dispelling to weigh on analytical balance, obtain quality m
0=0.319g;
2. take out parallel group 4 crucible used, use analytical balance to be weighed to obtain by crucible quality m
1=31.898g;
3. root water dropper of being dispelled by copper to be measured is placed in crucible, gets
Carbon black add in crucible, and by water dropper cover, cover crucible cover, crucible be placed in muffle furnace, 800 DEG C calcining 1 hour, after calcining, crucible is placed in vacuum drying chamber and naturally cools;
4. with distilled water, cooled crucible is cleaned, weigh with analytical balance after vacuum drying, obtain the quality m of crucible and elemental copper
2=31.929g, crucible label also records access times 5, uses packaging film to be wrapped up and deposits to treat that next time uses, prevent the elemental copper on sidewall of crucible oxidized.
Calculate copper for parallel group 1,2,3,4,5 all according to the following formula to dispel the massfraction of copper in root water dropper:
The measurement result of parallel group 1 ~ 5 sees the following form.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (6)
1. copper is dispelled a detection method for copper content in root water dropper, it is characterized in that: comprise the steps:
S1: get a copper to be measured root water dropper of dispelling and weigh, obtain quality m
0;
S2: get one clean or after tested used crucible weigh, obtain quality m
1;
S3: root water dropper of being dispelled by copper to be measured is placed in crucible, and the carbon black getting certain mass adds in crucible, and water dropper is covered, crucible is placed in muffle furnace and calcines 1h ~ 3h, cool under vacuum conditions after calcining;
S4: cleaned by cooled crucible with distilled water, weigh after vacuum drying, obtains the quality m of crucible and elemental copper
2, crucible label is recorded access times, then with packaging film, crucible is wrapped up, prevent the elemental copper on sidewall of crucible oxidized;
S5: calculate copper according to the following equation and to dispel the massfraction of copper in root water dropper:
Wherein, in step S3, the quality of the carbon black added is 0.2m
0+ (n-1)
n is that crucible access times add 1 and obtain,
in m
2and m
1be test the data obtained (n-1)th time; m
0be the data recorded for n-th time;
S6: repeat step S1-S5, to the water dropper parallel testing of each batch repeatedly, mean value is final copper content.
2. detection method according to claim 1, is characterized in that: described carbon black is acetylene carbon black, ultra-fine level, ash content≤0.1%.
3. detection method according to claim 1 and 2, is characterized in that: in S3, and the calcining heat of muffle furnace is 800-1000 DEG C.
4. detection method according to claim 3, is characterized in that: use analytical balance of weighing, and weighs gained mass figures and to retain after radix point three.
5. detection method according to claim 4, is characterized in that: crucible access times≤20 time.
6. detection method according to claim 5, is characterized in that: it is the situation of 8%-12% that the method is applicable to the copper scope of copper content in root water dropper of dispelling.
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Citations (6)
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---|---|---|---|---|
CN101045963A (en) * | 2006-03-31 | 2007-10-03 | 日矿金属株式会社 | Dry type refining method for copper |
CN101303286A (en) * | 2008-07-02 | 2008-11-12 | 新疆新鑫矿业股份有限公司 | Method for rapidly measuring copper content |
CN101413868A (en) * | 2008-11-20 | 2009-04-22 | 河南豫光锌业有限公司 | Method for checking coking grain appearance |
CN102879291A (en) * | 2012-10-19 | 2013-01-16 | 青岛天祥食品集团有限公司 | Method for determining content of iron powder in pepper products rapidly |
CN103728199A (en) * | 2014-01-26 | 2014-04-16 | 上海新阳半导体材料股份有限公司 | Analysis method of carbon-sulfur elements in high-purity copper |
CN103868815A (en) * | 2014-03-05 | 2014-06-18 | 首钢总公司 | Method for evaluating deterioration degree of coke at upper part of blast furnace |
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2015
- 2015-05-08 CN CN201510235834.5A patent/CN104865148A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101045963A (en) * | 2006-03-31 | 2007-10-03 | 日矿金属株式会社 | Dry type refining method for copper |
CN101303286A (en) * | 2008-07-02 | 2008-11-12 | 新疆新鑫矿业股份有限公司 | Method for rapidly measuring copper content |
CN101413868A (en) * | 2008-11-20 | 2009-04-22 | 河南豫光锌业有限公司 | Method for checking coking grain appearance |
CN102879291A (en) * | 2012-10-19 | 2013-01-16 | 青岛天祥食品集团有限公司 | Method for determining content of iron powder in pepper products rapidly |
CN103728199A (en) * | 2014-01-26 | 2014-04-16 | 上海新阳半导体材料股份有限公司 | Analysis method of carbon-sulfur elements in high-purity copper |
CN103868815A (en) * | 2014-03-05 | 2014-06-18 | 首钢总公司 | Method for evaluating deterioration degree of coke at upper part of blast furnace |
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