IS 4027-10: Chemical Analysis of Bronzes - Methods, Part 10: Determination of Silicon

9 Pages·2000·1.1 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 4027-10 (2000): Chemical Analysis of Bronzes - Methods,
Part 10: Determination of Silicon [MTD 8: Copper and Copper
Alloys]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS4027(PartlO):2000

Indian Standard
LACIMEHC SISYLANA FO SEZNORB - METHODS
PART 10 DETERMINATION OF SILICON
(First Revision)
ICS 77.120.30:71.100.55

0 BIS 2000
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZA%AR MARG

NEW DELHI 110002
May 2000
PriceGroup 2
Methods of latnemurtsnI/lacimehC sisylanA of suorref-noN slateM lanoitceS ,eettimmoC DTM 28
DROWEROF
sihT naidnI dradnatS (Part 10) tsriF( )noisiveR was adopted yb the uaeruB of naidnI ,sdradnatS after the
draft dezilanif yb the Methods of latnemurtsnI/lacimehC sisylanA of suorref-noN slateM lanoitceS
eettimmoC had neeb devorppa yb the lacigrullateM gnireenignE noisiviD .licnuoC
SI 4027 was tsrif dehsilbup ni 1967 dna derevoc noitanimreted of ,uC ,bP ,nS ,nM ,P ,iN ,eF ,iS ,LA nZ dna bS
ni .seznorb elihW gniweiver siht dradnats the eettimmoc dediced that ti was tneinevnoc ot esiver ti ni seires
of parts hcihw no noitacilbup lliw edesrepus the tnaveler dohtem for noitanimreted nevig ni SI 4027 : 1967
‘Methods of lacimehc sisylana of .’seznorb ehT other parts are as :swollof
Part 1 noitanimreteD of copper dna dael yb citylortcele dohtem
Part 2 noitanimreteD of esenagnam yb cirtemotohp dohtem
Part 3 noitanimreteD of surohpsohp yb cirtemulov dohtem
Part 4 noitanimreteD of lekcin yb cirtemotohp dohtem
Part 5 noitanimreteD of nit yb cirtemidoi dohtem
Part 6 noitanimreteD of cniz yb cirtemoxelpmoc dohtem
Part 7 noitanimreteD of ynomitna yb enimadohR B cirtemotohportceps dohtem
Part 8 noitanimreteD of nori
Part 9 noitanimreteD of muinimula yb cimota noitprosba cirtemotohportceps dohtem
Part 11 noitanimreteD of dael
sihT dradnats srevoc sdohtem for noitanimreted of nocilis ni seznorb yb cirtemivarg dohtem (for iS >
0.1 )tnecrep dna munedbylom eulb dohtem (for iS < 0.1 .)tnecrep
nI gnitroper the stluser of a test or sisylana edam ni ecnadrocca- htiw siht ,dradnats fi the lanif ,eulav
devresbo or ,detaluclac si ot eb dednuor off, ti llahs eb enod ni ecnadrocca htiw SI 2 : 1960 seluR‘ for
gnidnuor off laciremun seulav
(revised)‘.
SI 4027 (Part 10) : 2000
Indian Standard
LACIMEHC SISYLANA FO SEZNORB - METHODS
PART 10 DETERMINATION OF SILICON
(First Revision)
1 SCOPE 5.2.6 Dilute Sulfuric Acid - l:1 .)v/v(
sihT dradnats srevoc dohtem for noitanimreted of 5.2.7 Hydrojluoric Acid - 40 .tnecrep
nocilis ni seznorb yb cirtemivarg dohtem (for iS >
0.1 )tnecrep dna munedbylom~ eulb dohtem (for iS < 5.3 Procedure
0.1 .)tnecrep
5.3.1 roF selpmas gniniatnoc nocilis evoba 0.1 ,tnecrep
2 ECNEREFER hgiew 5.00 g of elpmas ot a nialecrop lessev dna
evlossid ni 10 lm of detartnecnoc cirolhcordyh dica
ehT naidnI dradnatS detsil woleb sniatnoc
dna 20 lm of detartnecnoc cirtin .dica nehW
snoisivorp hcihw hguorht ecnerefer ni siht text, noitulossid si etelpmoc add 30 lm of detartnecnoc
setutitsnoc snoisivorp of siht .dradnats tA the emit ciruflus .dica roF selpmas gniniatnoc 0.5 ot 5 tnecrep
of noitacilbup the noitide detacidni was .dilav llA
nocilis refsnart 1.00 g elpmas ot a nialecrop lessev
sdradnats are tcejbus ot noisiver dna seitrap ot dna evlossid ni 5 lm of detartnecnoc cirolhcordyh
tnemeerga desab no siht dradnats are degaruocne ot dica dna 10 lm of detartnecnoc cirtin .dica nehW
etagitsevni the ytilibissop of gniylppa the tsom noitulos si etelpmoc add 15 lm of detartnecnoc
tnecer noitide of the dradnats detacidni :woleb
ciruflus .dica
SI No. eltiT
5.3.2 etaropavE no a hot etalp litnu esned elihw
1817 : 1961 Methods for gnilpmas of suorref-non
semuf are nevig off. wollA ot ,looc add ylluferac
slatem for lacimehc sisylana
100 lm of etulid cirolhcordyh dica (15) dna gnirb
3 GNILPMAS ot .liob fI dael si tneserp ni the ,yolla add evif smarg
of muinomma edirolhc dna eunitnoc ot liob llit dael
selpmaS llahs eb nward dna prepared ni ecnadrocca
etaflus si ni .noitulos retliF the noitulos yletaidemmi
htiw SI 1817.
hguorht esolc erutxet retlif paper. refsnarT
4 YTILAUQ FO STNEGAER yletelpmoc the eudiser ot the paper dna wash
ylhguoroht htiw etulid cirolhcordyh dica .)99:1(
sselnU deificeps esiwrehto lacitylana grade stnegaer evreseR the .eudiser
dna dellitsid water llahs eb deyolpme ni the test,
5.3.3 nruteR the etartlif ot the lanigiro lessev dna
5 DETERMINATION OF SILICON BY treat ni ecnadrocca htiw 4.3.2. refsnarT htob the
THE GRAVlMETRIC METHOD (FOR SILICON papers dna seudiser ot a munitalp .elbicurc etingI at
> 0.1 PERCENT) a wol erutarepmet litnu the paper has neeb- tnrub
off dna neht heat pu ot 1 05O’C. looC ni a rotaccised
5.1 Outline of the Method
dna .hgiew ddA eno or two drops of etulid ciruflus
aciliS deniatbo after noitardyhed of the noitulos ni dica dna tneiciffus ciroulfordyh dica (2 ot 5 )lm ot
the ciruflus dica muidem si denimreted yb evlossid the eudiser dna etaropave the noitulos
noitaziroulfordyh of eudiser as .lausu ylwols ot esned etihw .semuf eunitnoC ot heat the
elbicurc litnu lla the free ruflus edixoirt has neeb
5.2 Reagents
dellepxe dna neht etingi at 1 C°050 for 5 .nim looC
5.2.1 Cottceiltrated Hydrochloric Acid - rd = 1.16. ni a rotaccised dna .hgiew
5.2.2 Cotlcetltrated Nitric Acid - rd = 1.42. 5.3.4 Make a knalb noitanimreted gniwollof the
emas erudecorp dna gnisu the emas stnuoma of lla
5.23 Cotlcentrated Sulfuric Acid - rd = 1.84.
stnegaer tub tuohtiw the .elpmas
5.2.4 Atttttm~iunz Chloride - .diloS
5.4 Calculations
5.2.5 Dilute H~drockloric Acid - 5:1 dna 99:I
A-B
.),\/,lC nociliS tnecrep = __ x 46.72
C
IS 4027 (Part 10) : 2000
where 7.2 refsnarT eudiser dna retlif paper ni a munitalp
elbicurc dna etingi at wol erutarepmet at 6OO’C.
A = ssam ni g of acilis deniatbo after FH
looC dna xim the eudiser htiw 0.25 g muidos
tnemtaert ,)2X-1X(
edixorep dna heat ni a ecanruf at C°006 for 10 .nim
B = ssam ni g of acilis deniatbo ni knalb after FH
,looC add 15 lm water. revoC the elbicurc htiw dil
,tnemtaert
dna wolla the noitcaer ot .edisbus ddA 15 lm
C= ssam ni g of elpmas ,nekat detartnecnoc ciruflus dica dna refsnart the etartlif
XI = ssam of eudiser erofeb FH ,tnemtaert dna deniatbo evoba (7.1) dna the stnetnoc of the
x2 = ssam of eudiser after FH .tnemtaert munitalp elbicurc ot eno ertil cirtemulov .ksalf
etuliD ot kram dna .xim refsnarT yletaidemmi ot a
6 DETERMINATION OF SILICON BY
enelyporpylop or enelyhteoroulfartetylop .reniatnoc
MOLYBDENUM BLUE SPECTROPHOTO-
METRIC METHOD (FOR SILICON < 0.1 7.3 ettepiP two 20 lm stouqila morf the test noitulos
PERCENT) otni separate 50 lm cirtemulov .sksalf nI each case
eno touqila si for test dna rehtona si for
6.1 Outline of the Method gnitasnepmoc .noitulos ddA the stnegaer ni the
gniwollof :rennam
A elbatius touqila of the test noitulos si treated htiw
muinomma etadbylom ot mrof etacilisodbylom a) Test Solution - ddA ni the gniwollof order
)wolley( .xelpmoc xelpmoC si decuder ot gnikahs after each :snoitidda
munedbylom eulb xelpmoc htiw cibrocsa dica dna
- 10 lm of muinomma etadbylom dna wolla
derusaem at 810
nm.
ot dnats for 20 nim
6.2 Reagents - 5 lm of etulid ciruflus dica )4:1(
6.2.1 Concentrated Hydrochloric Acid - rd = 1.16. - 5 lm of cilaxo dica dna
6.2.2 Concentrated Nitric Acid - rd = 1.42. - 5 lm of cibrocsa dica noitulos
6.2.3 Concentrated Sulfuric Acid - rd = 1.84. )b Compensating Solution - ddA ni the gniwollof
order gnikahs after each :noitidda
6.2.4 Dilute Hydrochloric Acid - I:5 dna 99:1
.)v/v( - 5 lm of etulid ciruflus dica )4:1(
6.2.5 Sodium Peroxide - 5 lm of cilaxo dica dna yletaidemmi add
6.2.6 Ammonium Molybdate - 10 .tnecrep - 5 lm of cibrocsa dica
etuliD ot kram dna .xim wollA each noitulos ot
6.2.7 Oxalic Acid - 5 .tnecrep
dnats for 30 .nim

6.2.8 Ascorbic Acid - 4 .tnecrep
7.4 Blank
6.2.9 Standard Silicon Solution lml( = gml )iS
yrraC tuo a knalb of stnegaer desu evoba gnisu
hgieW 2.139 3 g deniclac hgih ytirup acilis otni a 0.500 g of erup copper daetsni of test .noitrop
munitalp .elbicurc xiM htiw 16 g of muidos Prepare a separate gnitasnepmoc noitulos for the
etanobrac dna esuf at 1 C°050 for 30 .nim Extract .knalb
the desuf ssam htiw water dna refsnart ot 1 ertil
cirtemulov ,ksalf etulid ot kram dna refsnart ot 7.5 Calibration Curve
AFTP .elttob refsnarT 01~ lm of the evoba noitulos
refsnarT 0.5 g of erup copper otni 250 lm AFTP
dna etulid ot 500 .lm refsnarT ot a AFTP .elttob
rekaeb dna evlossid as ni case of test noitrop dna
I lm = 20 pg .iS
ekam pu ot 1 .ertil ekaT 20 lm of touqila of siht
noitulos otni neves cirtemulov sksalf dna add 0, 2.5,
7 ERUDECORP
5, 7.5, 10, 20 dna 25 lm of dradnats nocilis noitulos
7.1 hgieW 0.500 g of elpmas ni a nialecrop ,lessev of 20 lm/gmp (see 5.2.9) dna poleved the ruoloc as
denoitnem evoba gnittimo the gnitasnepmoc dna
dissolve in 5 ml concentrated hydrochloric acid and
knalb .noitulos
10 ml concentrated nitric acid. Evaporate on a hot
esned etihw semuf are nevig
plate until off. Allow NOTE - Blank and compensating solutions are not necessary
t(> cool. Add 100 ml of dilute hydrochloric acid for the calibration tests ;IS both rlrc corrected via the zero
I( aliquot of the series.
~5) and boil. Cool filter through close texture filte r
the mn gnisu a
paper and wash the rcsiduc with dilute hydrochloric Measure absorbance value at 810
elbatius- path htgnel .llec Prepare the noitarbilac
acid (I:‘#). Reserve the residue and filtrate.
3
IS 4027 (Part 10) : 2000
evruc yb gnittolp ten ecnabrosba seulav tsniaga the ,nociliS tnecrep = y X $-
nocilis snoitartnecnoc expressed ni lm/gp ni the
derusaem .snoitulos where
A = ssam ni gm of nocilis ni test noitulos
7.6 Calculation
(corrected for sti gnitasnepmoc ,)noitulos
trevnoC the corrected ecnabrosba of each test B = ssam ni gm of nocilis ni knalb noitulos
(corrected for sti gnitasnepmoc ,)noitulos
noitulos (test dna )sknalb otni gnidnopserroc
dna
noitartnecnoc of nocilis ni lm/gp yb gnisu the
noitarbilac graph. etaluclaC the nocilis tnetnoc as C = ssam ni g of elpmas detneserper yb .touqila
:swollof
Bureau of Indian Standards
BIS si a yrotutats noitutitsni dehsilbatse rednu the uaeruB of Zndian Standards Act, 1986 ot etomorp
suoinomrah tnempoleved of the seitivitca of ,noitazidradnats gnikram dna ytilauq noitacifitrec of goods
dna gnidnetta ot detcennoc srettam ni the .yrtnuoc
Copyright
SIB has the thgirypoc of lla sti .snoitacilbup No part of these snoitacilbup yam eb decudorper ni yna mrof
tuohtiw the roirp noissimrep ni gnitirw of .SIB sihT does ton edulcerp the free ,esu ni the esruoc of
gnitnemelpmi the ,dradnats of yrassecen ,sliated hcus as slobmys dna ,sezis epyt or grade .snoitangised
seiriuqnE gnitaler ot thgirypoc eb addressed ot the rotceriD ,)snoitacilbuP( .SIB
Review of Indian Standards
stnemdnemA are deussi ot sdradnats as the deen sesira no the sisab of .stnemmoc sdradnatS are osla deweiver
;yllacidoirep a dradnats gnola htiw stnemdnema si demriffaer nehw hcus weiver setacidni that on segnahc are
;dedeen fi the weiver setacidni that segnahc are ,dedeen ti si nekat pu for .noisiver sresU of naidnI sdradnatS
dluohs niatrecsa that yeht are ni noissessop of the tsetal stnemdnema or noitide yb gnirrefer ot the tsetal eussi of
SIB‘ ’eugolataC dna :sdradnatS‘ ylhtnoM .’snoitiddA
sihT naidnI dradnatS has neeb depoleved morf DOC : NO. DTM 28 (3476).
Amendments Issued Since Publication
dnemA No. Date of eussI txeT detceffA
UAERUB FO NAIDNI SDRADNATS

sretrauqdaeH :
kanaM ,navahB 9 rudahaB Shah rafaZ Marg, New ihleD 110 002 smargeleT : ahtsnaskanaM
senohpeleT : 323 01 31,323 33 75,323 94 02 nommoC( ot lla )seciffo
lanoigeR seciffO : enohpeleT
lartneC : kanaM ,navahB 9 rudahaB Shah rafaZ Marg 323 76 17
WEN IHLED 110 002 323 38 41
nretsaE : 41/l .C .I .T emehcS IIV M, V. .I .P Road, ihcagruknaK 337 84 99,337 85 61
ATTUCLAC 700 054 337 86 26,337 91 20
nrehtroN : 0CS 335336, Sector ,A-43 HRAGIDNAHC 160 022 { 60 38 43
60 20 25
nrehtuoS : .C .I .T ,supmaC VI Cross Road, IANNEHC 600 113 1 235 02 16,235 04 42
235 15 19,235 23 15
nretseW : ,ayalakanaM E9 ,CDIM ,loraM irehdnA (East) 832 92 95,832 78 58
IABMUM 400 093 1 832 78 91,832 78 92
sehcnarB : .DABADAMHA .EROLAGNAB .LAPOHB .RAWHSENABUHB FROTABMIOC
.DABADIRAF .DABAIZAHG .ITAHAWUG .DABAREDYH .RUPIAJ .RUPNAK

.WONKCUL .RUPGAN .ANTAP .ENUP .TOKJAR .MARUPAHTNANAVURIHT
:
Printed at Rabhat Offset Press, New Delhi-2