JP7252936B2 - 分析用試料の調製方法 - Google Patents
分析用試料の調製方法 Download PDFInfo
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- 238000004458 analytical method Methods 0.000 title claims description 88
- 238000000034 method Methods 0.000 title claims description 55
- 239000000523 sample Substances 0.000 claims description 108
- 239000000243 solution Substances 0.000 claims description 86
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 82
- 239000003729 cation exchange resin Substances 0.000 claims description 82
- 239000002253 acid Substances 0.000 claims description 52
- 238000004380 ashing Methods 0.000 claims description 45
- 239000002516 radical scavenger Substances 0.000 claims description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 33
- 239000007864 aqueous solution Substances 0.000 claims description 21
- 238000004090 dissolution Methods 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 150000001768 cations Chemical class 0.000 claims description 18
- 239000000538 analytical sample Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 5
- 239000002956 ash Substances 0.000 description 80
- 229910052796 boron Inorganic materials 0.000 description 45
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 44
- 229910052698 phosphorus Inorganic materials 0.000 description 34
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 33
- 239000011574 phosphorus Substances 0.000 description 33
- 238000002360 preparation method Methods 0.000 description 29
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 25
- 229910021642 ultra pure water Inorganic materials 0.000 description 21
- 239000012498 ultrapure water Substances 0.000 description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 20
- 239000000126 substance Substances 0.000 description 16
- 238000005406 washing Methods 0.000 description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 229910052697 platinum Inorganic materials 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 11
- 238000000354 decomposition reaction Methods 0.000 description 11
- 229910002804 graphite Inorganic materials 0.000 description 10
- 239000010439 graphite Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000003957 anion exchange resin Substances 0.000 description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 description 7
- 229940043430 calcium compound Drugs 0.000 description 7
- 150000001674 calcium compounds Chemical class 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 7
- 238000009616 inductively coupled plasma Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000011002 quantification Methods 0.000 description 7
- 239000010453 quartz Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000012494 Quartz wool Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 230000001143 conditioned effect Effects 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000011017 operating method Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- 239000012472 biological sample Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000012041 food component Nutrition 0.000 description 2
- 239000005417 food ingredient Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000120 microwave digestion Methods 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- SJNXLFCTPWBYSE-UHFFFAOYSA-N 2-(4-phenylphenyl)-5-[5-(4-phenylphenyl)thiophen-2-yl]thiophene Chemical compound C=1C=C(C=2C=CC(=CC=2)C=2C=CC=CC=2)SC=1C(S1)=CC=C1C(C=C1)=CC=C1C1=CC=CC=C1 SJNXLFCTPWBYSE-UHFFFAOYSA-N 0.000 description 1
- OGGKVJMNFFSDEV-UHFFFAOYSA-N 3-methyl-n-[4-[4-(n-(3-methylphenyl)anilino)phenyl]phenyl]-n-phenylaniline Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 OGGKVJMNFFSDEV-UHFFFAOYSA-N 0.000 description 1
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012491 analyte Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052795 boron group element Inorganic materials 0.000 description 1
- 150000001640 boron group elements Chemical class 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052800 carbon group element Inorganic materials 0.000 description 1
- 150000001724 carbon group elements Chemical class 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 229910052798 chalcogen Inorganic materials 0.000 description 1
- 150000001787 chalcogens Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 238000005347 high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 1
- YFGMQDNQVFJKTR-UHFFFAOYSA-N ptcdi-c8 Chemical compound C=12C3=CC=C(C(N(CCCCCCCC)C4=O)=O)C2=C4C=CC=1C1=CC=C2C(=O)N(CCCCCCCC)C(=O)C4=CC=C3C1=C42 YFGMQDNQVFJKTR-UHFFFAOYSA-N 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000005464 sample preparation method Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000012929 ultra trace analysis Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Description
本調製方法の対象である試料は、灰化が可能な試料であれば特に限定されるものではなく、炭素非含有試料、炭素含有試料、またはこれらの組み合わせであり得る。
灰化工程は、試料を捕捉剤の存在下に灰化することによって、上記試料中の元素が捕捉された灰化物を得る工程である。
酸溶解工程は、灰化工程において得られた灰化物を酸に溶解することによって、灰化物水溶液を得る工程である。
陽イオン交換樹脂接触工程は、酸溶解工程において得られた灰化物水溶液と陽イオン交換樹脂とを接触させることによって、捕捉剤由来の元素の陽イオンを陽イオン交換樹脂に捕捉して、上記陽イオンの元素以外の元素を含んでいる分析溶液を得る工程である。なお、「上記陽イオンの元素」は、「捕捉対象元素」とも称し、捕捉剤に由来する元素である。
分析工程は、上述した本調製方法により得られた上記分析溶液に含まれている元素を、分析装置で測定する工程である。なお、上記「元素を、分析装置で測定する」とは、元素を検出してその種類を特定すること、元素を定量すること、またはその両方が意図される。
従来は、特定の元素を分析するための分析用試料の調製方法として、試料中の元素が捕捉された灰化物を酸に溶解して得た灰化物水溶液から、分析対象の元素を捕捉および濃縮して単離する方法が用いられていた。例えば、特許文献1では、ほう素を分析するために、灰化物水溶液から、陰イオン交換樹脂を用いてほう素を捕捉および濃縮して、単離する方法が用いられている。
実施例1では、以下に示す市販の試料を使用した:N,N’-ジフェニル-N,N’-ジ(m-トリル)ベンジジン、ペンタセン、5,5’-ジ(4-ビフェニルイル)-2,2’-ビチオフェン、N,N’-ジオクチル-3,4,9,10-ペリレンジカルボキシミド、および4,4’-ビス(N-カルバゾリル)-1,1’-ビフェニル。
粉末状の試料10mgを石英ビーカーに採取した。当該石英ビーカーに炭酸カルシウム(試薬特級、粉末状)を加えて、試料と炭酸カルシウムとを混合し、これらの混合物を得た。その後、石英ビーカーをバーナーで加熱することによって、混合物を灰化し、灰化物を得た。
得られた灰化物を含む石英ビーカー内に超純水(比抵抗値18Ω・cm以上)、および20質量%塩酸を加えた。次いで、石英ビーカーを100℃~150℃のホットプレート上に設置し、加熱することによって灰化物を溶解させ、灰化物水溶液を得た。ここで、当該灰化物水溶液における塩化水素の濃度は約4質量%であった。
石英ウール、および陽イオン交換樹脂(DOWEX強酸性型陽イオン交換樹脂(H型);ダウ・ケミカル社製)を順次カラムに充填し、陽イオン交換樹脂カラム(以下、単にカラムとも称する)を作製した。カラムに5質量%塩酸および超純水を通液して、カラムをコンディショニングした。
上記陽イオン交換樹脂接触工程で得た分析溶液を、誘導結合プラズマ質量分析装置(ICP-MS)(「ELAN DRCII」、米国パーキンエルマー社製、四重極誘導結合プラズマ-質量分析装置)に導入して、分析溶液中の元素(具体的にはほう素(B)およびリン(P))を測定した。
実施例1で用いたのと同じ試料を用いて、従来法であるマイクロウェーブ分解法に基づいて分析用試料を調製し、続いて上記試料中の元素(具体的にはほう素(B)およびリン(P))を定量した。具体的な操作手順は以下の通りである。
*表1において、「<(数値)」は数値(定量下限値)よりも小さい値であったことから、定量できなかったことを示している。
実施例2では、粉末状にした超高純度黒鉛にいくつかの元素を添加して混合物を調製し、当該混合物を試料として用いた。黒鉛に添加した元素は、Ge、As、Te、およびReであり、それら元素の添加量は全て200ngであった。
粉末状の試料10gを白金皿に採取した。当該白金皿に炭酸カルシウム(試薬特級、粉末状)を加えて、試料と炭酸カルシウムとを混合し、これらの混合物を得た。その後、白金皿を電気炉内にて3L/分で酸素を流通させながら900℃、3時間の条件で混合物を灰化し、灰化物を得た。
得られた灰化物を含む白金皿内に超純水(比抵抗値18Ω・cm以上)、および20質量%塩酸を加えた。次いで、白金皿を100℃のホットプレート上に設置し、加熱することによって灰化物を溶解させ、灰化物水溶液を得た。ここで、当該灰化物水溶液における塩化水素の濃度は約4質量%である。
石英ウール、および陽イオン交換樹脂(DOWEX強酸性型陽イオン交換樹脂(H型);ダウ・ケミカル社製)を順次カラムに充填し、陽イオン交換樹脂カラム(以下、単にカラムとも称する)を作製した。カラムに5質量%塩酸および超純水を通液して、カラムをコンディショニングした。
上記陽イオン交換樹脂接触工程で得た分析溶液を、誘導結合プラズマ質量分析装置(ICP-MS)(「ELAN DRCII」、米国パーキンエルマー社製、四重極誘導結合プラズマ-質量分析装置)に導入して、分析溶液中の元素を測定した。
Claims (3)
- 試料に含まれている元素を分析するための分析用試料の調製方法であり、
上記試料を捕捉剤の存在下に灰化することによって、上記試料中の元素が捕捉された灰化物を得る、灰化工程と、
上記灰化工程において得られた上記灰化物を酸に溶解することによって、灰化物水溶液を得る、酸溶解工程と、
上記酸溶解工程において得られた上記灰化物水溶液と陽イオン交換樹脂とを接触させることによって、上記捕捉剤由来の元素の陽イオンを陽イオン交換樹脂に捕捉して、上記陽イオンの元素以外の元素を含んでいる分析溶液を得る、陽イオン交換樹脂接触工程と、を含むことを特徴とする、分析用試料の調製方法。 - 上記試料が、炭素含有試料であることを特徴とする、請求項1に記載の分析用試料の調製方法。
- 請求項1または2に記載の分析用試料の調製方法により得られた上記分析溶液に含まれている元素を、分析装置で測定する分析工程を含むことを特徴とする、分析方法。
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K RAMER, Henry,Determination of Boron in Silicates after Ion Exchange Separation,ANALYTICAL CHEMISTRY,1955年,VOL.27, NO.1,pp.144-145 |
M ARTIN, J. Robert,Application of Ion Exchange to Determination of Boron,ANALYTICAL CHEMISTRY,1952年,VOL.24, NO.1,pp.182-185 |
村木勇夫,微量ホウ素の定量法について,JAPANANALYST,1957年,Vol. 6,pp.319-327 |
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