The Students' Guide in Quantitative Analysis - Free Ebooks Library

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^g QUANTITATIVE ANALYSIS. Analysis No. 25.—GUANO, Consult Fres., Quont. Analysis, § 230 ; A. Cairns, Am. Chcvi., Vol. I, p. S2. also article by F To be dettrniined: SiO„ CaO, MgO, Fe.Oj, ?,0„ SO3, .H,0, NHj, total N, organic and volatile matter. A.—Determination of Moisture, Heat 1 grm. at 100° C. until constant weight and loss= H,0[+(NIIJ.CO,]. In cases where great accuracy is required, a correction for the (NHJ^COj counted as water must here be made. Heat the substance in a U tube in a water-bath and a.spirate, collecting the (NH^)jCOj in normal ILSO.,. Titrate with KHO as usual. Subtract (NI-l^),COj found from H,0 [-}-(^NH^)iC03] determined by heating at 100" C. as above. B.—Organic and Volatile Matter. Determine loss by ignition \n open crucible, and correct for H,0, (CO,) and (NH,),C03). C—Ammonia. Use Schlosings method, Fres., § 99, 3, b. Mix the guano with milk of lime and place under bell-jar over a dish of normal PIjSO^. A large surface of acid in proportion to the guano solution is desirable. Let stand, cold, 48 hours or more, and titrate with normal KHO as in acidimetry, (Cf. Analysis No. 11.) D,—Total Nitrogen. Use Varrentrapp and Will's Method, as detailed in Fres., § 185. Heat the guano in a combustion tube with sods lime, converting it into NH3. Absorb the NH^ in a standard solution of H.SO^, aspirate and disconnect bulb. Add litmus and titrate with standard KHO. H—Sulphnric Acid. Dissolve in hot HCl, filter and precipitate with BaCL.or loilow the Scheme F.
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THE STUDENTS' GUIDE Quantitative An
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-J O o p«5 O
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PREFACE. The plan oi the Students'
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vm LIST OP ANALVSES. ij. Guano. Ui(
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3j INTKODUCTOKV NOTES. The choice o
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Xli U'ORKS FOE REIEREN.CE ^KD FOR S
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j^ QUANTITATIVE ANALYSIS. the preci
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1^ QUANTITATfVE ANALYSIS, The secon
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iS (iLrANXri-ATIVE ANALYSI.-,, When
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2C QUANTITATIVE AKALYSIS. Rcactio>i
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22 QUANTITATIVE ANALYSIS. crucible,
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24 QUANTITATIVE ANAI^YSIS, these fl
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26 QUANTfTATIVE ANALYSIS. D— Dete
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2S QUANTITATIVE ANALYSIS. B. — De
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3° yaANTlTATlVE ANALYSIS.
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32 QUANTITATIVE ANALYSIS. crucible,
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34 QUANTITATIVE ANALYSTS. N.B.—Ma
Page 35 and 36: -5 QUANTITATIVE ANALVSIS. element w
Page 37 and 38: 3$ a Bunsen burner ; QUANTITATIVE A
Page 40 and 41: VOLUMETRIC ANALYSIS. 4I solutions o
Page 42 and 43: ALKALIMETRV. 43 I-LjSO^ of sp. gr.
Page 44 and 45: finish with solution " No c,c. of N
Page 46 and 47: CHLORIMETRV. C Determine akohol by
Page 48 and 49: ILORIDE OF LIME. Valuation of Chlor
Page 50 and 51: TYPE METAL. ^t + « o " G ^t; « ti
Page 52 and 53: DETERMINATION OF 2IXC. E 53
Page 54 and 55: tf) ^ -I o a CHROMIC IRON OHtC. 55
Page 56 and 57: DETERMINATION OF ALKALIES. 57 which
Page 58 and 59: SOLUBLE SILICATES. 59 5
Page 60 and 61: -C o o '5 to 50 W) . is ^ w„ bo N
Page 62 and 63: TITANIPEtlOOS IRON ORE. 63
Page 64 and 65: -3 - /- '(C = r^ [jj J ,^ ^, w ^ "^
Page 66 and 67: NOTES TO THE PRECEDING SCHEME. 6f N
Page 68 and 69: In boilinc? NOTliS TO THE PRECEDING
Page 70 and 71: NOTES TO THE PRECBDISG SCHEME, Vonr
Page 72 and 73: NOTES TO THE PRECEDING SCHEME. 73 w
Page 74 and 75: PLIGHTS METHOD. 75 c n — r- t, a
Page 76 and 77: NOTES TO TIIIC PRKCEDING SCHEME. 77
Page 78 and 79: DETERMINATION OF TOTAL CARBON. 79 w
Page 80 and 81: I DETERMINATION OF TOTAL CAKOON. 8i
Page 82 and 83: DETEliMKNATlON OF SULPHUK, ETC. 83
Page 84 and 85: DETERMINATION OF IRON MANGANESE, ET
Page 88 and 89: 2-i B 1 d o". 3 + o o o o 0 -^ orr-
Page 90 and 91: POTABLE WATER. 9I E.—Calculation.
Page 92 and 93: POTABLE WATEK. 93 residue of NaCl+K
Page 94 and 95: L POTABLE WATER, 95 geii. To standa
Page 96 and 97: POTABLE WATER. 97 0.152 grains Na c
Page 98 and 99: SPECIFIC GRAVITIES OF SOLIDS AND LI
Page 100 and 101: OROANIC ANALYSIS. w'— F Sp. gr. =
Page 102 and 103: OKGANIC ANALYSIS. I03 (13) Sundry a
Page 104 and 105: BKTKRMINA'I'ION OF NITROGEN. los Of
Page 106 and 107: DETERMINATION OF NITROGEN. 107 D.
Page 108 and 109: ANALYSIS OF UlUNE. IO9 0.315 grms.
Page 110 and 111: ANALYSIS OF URINK. II I These subst
Page 112 and 113: ANALYSIS OF URINE. 113 2. Test witj
Page 114 and 115: ANALYSIS OF URINE. 11$ C. — Hcint
Page 116 and 117: DETERMINATION OF URINK. 117 filter
Page 118 and 119: DETERMINATION OF SUGAR, 119 A conve
Page 120 and 121: DETERMINATION OF GRAPE SUGAR. 121 T
Page 122 and 123: DISTILLATION OF PETROLEUM, i^t of a
Page 124 and 125: THE ELEMENTS, Naoie. Aluminium Anti
Page 126 and 127: Report of Analysis of Determination
Page 128 and 129: APPENDIX. 129 subsequently maintain
Page 130 and 131: APPENDIX. 131 excess, thus precipit
Page 132 and 133: APl'ENDfX. 133 METHOD FOR THE DETER
Page 134 and 135: APPENDIX, Battle and Daticy. of the
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APPENDIX, 137 (14) The stand for ho
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APPENDIX, ,,,, k^ S iLosuiphite .«
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Aeidimcuy, 45- Albumen ( dctcrminnl
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Sulphoiic iicid in poLiblc watef, d
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