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Report of Analysis of Determination of Grammes taken Method of Analysis. Speci.ii Remarks, ; APPENDIX. TRINITY COLLEGE. Hartford^ iSS - r'-ilcnl'ilnl I=; Theoretical IThK I. . reduced f-cl»«. of th, repoKln^ bh... m«.«r.n« 8 b, ,o .»c.«., d*- Mriliiil
is8 APPENDIX. OFFICIAL METHODS OF ANALYSIS OF THE ASSOCIATION OP OFFICIAL AGRICULTURAL CHEMISTS FOR 1887-88. METHODS FOR DETERMINING PHOSPHORIC ACID AND MOISTURE. (1) Pnparalion of Atw/Zc-.—The sample should be well intermixed anjd properly prepared, so that separate portions shall accurately represent the substance under examination, without loss or gain of moisture. (2) DiUrmination of Moisiure.~-{d) In potash salts, nitrate of soda, and sulphate of ammonia heat i to S grams at 130° C, till the weight is constant, and reckon water from the loss. {!>) In all other fertilizers heat 2 ijrams, or if the sample is too coarse to secure uniform lots of 2 grams each, 5 grams for live hours at 100° in a steam bath. (3) Water-soluble Phosphoric Acid.—^x'xw^ 1 grams on a filter, add a little water, let it run out before adding more water, and repeat this treatment cautiously until no phosphate is likely to precipitate in the filter. If the washings show turbidity after passing the filter clear up with acid. When the substance is nearly washed in this manner it is transferred to a mortar and rubbed with a rubber-tipped pesde to a homogeneous paste (l>ut not further pulverizt-'d), then returned to the filter and washed with water untd the filtrate mea-s- ures not less than 250 cc. Mi.^ the washings. Take an aliquot (usually corresponding to i or k gram of the substance) and determine phosphoric acid, as under total phosphoric acid. (4) CHratc-imohibte Phosphoric Acid.—Wash the residue of the treatment with water into a 200 cc. flask with 100 cc. of strictly neutral ammonium citrate solution of 1.09 density, prepared as here- after directed. Cork the flask securely and place it in a water bath, the water of which stands at 65' C. (The water bath should be of such a size that the introduction of the cold flask or flasks shall not cause a reduction of the temperature of the bath of more than 2° C.) Raising the temperature as rapidly .is practicable to 65" C, which is
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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
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-5 QUANTITATIVE ANALVSIS. element w
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3$ a Bunsen burner ; QUANTITATIVE A
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VOLUMETRIC ANALYSIS. 4I solutions o
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ALKALIMETRV. 43 I-LjSO^ of sp. gr.
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finish with solution " No c,c. of N
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CHLORIMETRV. C Determine akohol by
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ILORIDE OF LIME. Valuation of Chlor
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TYPE METAL. ^t + « o " G ^t; « ti
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DETERMINATION OF 2IXC. E 53
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tf) ^ -I o a CHROMIC IRON OHtC. 55
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DETERMINATION OF ALKALIES. 57 which
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SOLUBLE SILICATES. 59 5
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-C o o '5 to 50 W) . is ^ w„ bo N
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TITANIPEtlOOS IRON ORE. 63
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-3 - /- '(C = r^ [jj J ,^ ^, w ^ "^
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NOTES TO THE PRECEDING SCHEME. 6f N
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In boilinc? NOTliS TO THE PRECEDING
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NOTES TO THE PRECBDISG SCHEME, Vonr
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NOTES TO THE PRECEDING SCHEME. 73 w
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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 86 and 87: .&. a o Ho a etts jr ^ ^ id o y i;
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 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
Page 136 and 137: APPENDIX, 137 (14) The stand for ho
Page 138 and 139: APPENDIX, ,,,, k^ S iLosuiphite .«
Page 140 and 141: Aeidimcuy, 45- Albumen ( dctcrminnl
Page 142: Sulphoiic iicid in poLiblc watef, d
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