GRAVIMETRIC DETERMINATION OF MOISTURE AND PHOSPHORUS CONTENT IN FERTILIZER SAMPLE A.J.E.TABUSO DEPARTMENT OF MINING OF MINING, METALLURGICAL AND METALLURGICAL AND MATERIALS ENGINEERING, COLLEGE OF ENGINEERING OF ENGINEERING UNIVERSITY OF UNIVERSITY OF THE THE PHILIPPINES, DILIMAN QUEZON CITY , PHILIPPINES DATE PERFORMED: FEB 3, 2015 INSTRUCTOR’S NAME : ELLA DOLIENTE
ABSTRACT In the growth o !"#nt$, the% w&"" nee' !ho$!hor($ to he"! 'e)e"o! *e""$ #n' +o&$t(re th#t r&ng$ the !ho$!hor($, w&th other n(tr&ent$, to the !"#nt thro(gh the root$root$- Th&$ e.!er&+ent e.!er&+ent w#$ *on'(*te' *on'(*te' to 'eter+&ne 'eter+&ne the +o&$t(re +o&$t(re &n # ert&"&/ ert&"&/er er $#+!"e % *on$t#nt we&gh&ng #n' to 'eter+&ne the !ho$!hor($ 0P1 *ontent o the ert&" ert&"&/e &/err $#+!" $#+!"e e ($&ng ($&ng !re*& !re*&!&t !&t#t& #t&on on gr#)&+ gr#)&+etr etr% %- Pre*& Pre*&!&t !&t#t& #t&on on gr#)& gr#)&+et +etr% r% &$ # +etho' (n'er gr#)&+etr&* #n#"%$&$ wh&*h ($e$ we&ght$ o $o"&'$ to 'eter+&ne the #+o(nt o # $o(ght $!e*&e$ or % #''&ng !re*&!&t#t&ng #gent2$ to or+ # !re*&!&t#te wh&*h wh&*h w#$ w#$ '&ge$t '&ge$te', e', 3"tr# 3"tr#te' te',, he#te' he#te',, *oo"e' *oo"e',, #n' we&ghe we&ghe''- In the *on'(* *on'(*te' te' e.!er&+ent e.!er&+ent,, # ert&"&/ ert&"&/er er $#+!"e $#+!"e we&gh&ng we&gh&ng 4-5667 4-5667 gr#+$ gr#+$ (n'ergon (n'ergone e !re*&!&t# !re*&!&t#t&on t&on gr#)&+etr% #n' &t w#$ 'eter+&ne' th#t 5-8679 o &t &$ +o&$t(re wh&"e 7-5589 &$ !ho$!hor($ !ho$!hor($- Co+!#re' to the theoret&*#" )#"(e$ o 9P there &$ #n error o :6-8: wh&*h &$ # h&gh !er*ent#ge o error (t &t &$ re"#t&)e"% $#+e to the '#t# o the other re$e#r*her$; re$e#r*her$; thereore, &t *#n e $#&' th#t the e.!er&+ent &$ # $(**e$$-
INTRODUCTION
Phosphorus s o!" #h" "ss"!#$% !""& !""&s s o' p%$! p%$!#s #s 'or 'or #h" #h"rr (ro) (ro)#h* #h* I# h"%ps ! +"%% &so! $!& &""%op-"!# o' !") #ssu"s* .#hou# #, #h" (ro)#h o' $ p%$!# $!& #s roo#s $r" s#u!!"&* Ths s #h" r"$so! )h/ '"r#%"rs +o!#$! phosphorus #o("#h"r )#h #h" o#h" o#h"rr +o-p +o-po! o!"! "!#s #s,, $!& $!& #h"s #h"s" " $r" $r" +$rr"& / so% )$#"r or -os#ur" )h+h )%% ""!#u$%%/ " $sor"& / p%$!#s us!( #h"r roo#s 4* For #hs "p"r-"!#, #h" -os#ur" $!& #h" phosphorus +o!#"!# o' $ s$-p%" '"r#%"r s &"#"r-!"& / (r$ (r$-"# "#r r+ + $!$% $!$%/s /ss s,, sp"+ sp"+6 6+$ +$%% %%/ / pr"+p# pr"+p#$#o $#o! ! (r$-"#r/ (r$-"#r/** 7r$-"#r+ 7r$-"#r+ $!$%/ss $!$%/ss s +o!s&"r +o!s&"r"& "& $ 8u$!##$# 8u$!##$#" "
$!$% $!$%/s /ss s )h+ )h+h h us"s us"s #h" #h" )" )"( (h# h#s s o' so% so%&s &s** I# s &o!" &o!" #o &"#"r "#"r- -!" !" #h" #h" $-ou!# o' $! $!$%/#", or #h" sou(h# sp"+ sp"+" "s, s, ! $ -# -#ur ur" " or so%u# so%u#o o! ! / $&& $&&!( !( $ pr"+ pr"+p p# #$# $#! !( ( $("! $("!#, #, $%so $%so r"'"r r"'"rr" r"& & $s #h" pr"+ pr"+p# p#$!# $!#** Th"!, Th"!, $ pr"+p# pr"+p#$#" $#" )%% " 'or-"& 'or-"& +o!#$!!( +o!#$!!( #h" sou(h# sp"+"s* Th" pr"+p#$#" )%% " so%$# so%$#"& "& / 6%#r$# 6%#r$#o! o! $!& h"$#"& h"$#"&,, usu$%%/ $# $ou# 110 9C, #o "p"% $!/ %8u %8u& & +o!#" +o!#"!# !# "'o "'or" r" -"$s -"$sur ur!( !( #s #s 14 )"(h# * I# $%so !+%u&"s $ pro+"ss !o)! $s +o!s#$!# )"(h!( )h+h s &o!", $# %"$s# ! #hs "p"r-"!#, ! )"(h!( #h" +o!#$!"r o' #h" s$-p%"* Co!s#$!# )"(h "(h!( s $s+ $s+$% $%%/ %/ h"$ h"$#!( #!( $! o;"+# o;"+#,, ! #hs #hs +$s" +$s" #h" +ru+ +ru+%", %", 'or 1
so-" #-" $# $ou# 1109C, #h"! p%$+!( # ! $ &"s++$#or "'or" )"(h!( # ! $! $!$%/#+$% $%$!+"* A'#"r r"+or&!( #h" )"(h#, # )%% " h"$#"& $($! $!& #h" pro+"ss s #o " r"p"$#"& u!#% #h" o#$!"& -$ss r"$&!( s r"%$#"%/ +o!s#$!# 34*
weight ppt × P2 O5
=
FW P2 O5 FW MgNH 4 PO 4 • 6 H 2 O × 100 weight sample
3 METHODOLOGY
.h"! # +o-"s #o #h" pr"+p#$#" ! pr"+p#$#o! (r$-"#r/, # -us# " "$s/ #o s"p$r$#" )#h #h" so%u#o! / 6%#r$#o!< $!& #o &o #h$#, #h" pr"+p#$#" o' p$r#+%"s -us# " ( "!ou(h* I# -us# $%so h$" %o) so%u%#/ #o pr""!# # 'ro- &sso%!( $+ !#o #h" so%u#o!* Th" susp"!&"& p$r#+%"s o' #h" pr"+p#$#" $r" $%so $%%o)"& #o s"##%" "'or" 6%#"r!(, #hs s !o)! $# &("s#o! 24*
Th" "p"r-"!# $r" -$!%/ &&"& !#o #hr"" p$r#s: A #h" +o!s#$!# )"(h!( o' #h" +ru+%", B #h" $!$%/ss o' -os#ur" ! #h" '"r#%"r s$-p%", $!& C #h" pr"+p#$#o! o' M$(!"suA--o!u- Phosph$#" >"$h/&r$#" M(N>3PO@>2O*
S!+" '"r#%"rs $r" so%u%" ! )$#"r =-$!( # "$s/ 'or p%$!#s #o $sor !u#r"!#s #hrou(h #h"r roo#s = $ pr"+p#$!# s #o " us"& #o pr"+p#$#" phosphorus, P, ! #h" 'oro' -$(!"su- $--o!u- phosph$#" h"$h/&r$#", M(N>?PO?@>O, $s sho)! ! #h" +h"-+$% "8u$#o!
A s%(h#%/ $;$r +ru+%" )$s p%$+"& ! $! o"! s"# $# 1109C 'or $# %"$s# 2 hours* .#h #h" us" o' +ru+%" #ho!(s, #h" +ru+%" )$s p%$+"& ! $ &"s++$#or* A'#"r 15 -!u#"s, #h" )"(h# o' #h" +ru+%" )$s &"#"r-!"& us!( $! $!$%/#+$% $%$!+"* Th"!, # )$s p%$+"& $+ #o #h" o"! $# 1109C 'or $!o#h"r 30 -!u#"s* Ths pro+"ss )$s r"p"$#"& u!#% #h" +ru+%" )"(h# r"$&!(s o' #h" $!$%/#+$% $%$!+" r"-$!"& +o!s#$!#*
5>2O% >PO2$8 N>$8 M(2$8O>$8 G M(N>PO@>2Os 1 Th"!, 'ro- #h" )"(h# o' #h" pr"+p#$#", )h+h s M(N>?PO?@>O, #h" p"r+"!#$(" or phosphorus, P, $!& phosphorus p"!#o&", P 2O5, +$! " +$%+u%$#"& / us!( #h" "8u$#o!: weight ppt × %P = 2 <$!&,
FW P FW MgNH 4 PO 4 • 6 H 2 O weight sample
A* Co!s#$!# ."(h!( o' #h" Cru+%"
B* Mos#ur" A!$%/ss ! #h" F"r#%"r S$-p%" .#h #h" us" o' #h" $!$%/#+$% $%$!+", rou(h%/ 3*0 (r$-s o' #h" '"r#%"r )$s p%$+"& ! #h" +ru+%", )h+h pr"ous%/ )"!# u!&"r +o!s#$!# )"(h!(* Th" +ru+%" +o!#$!!( #h" s$-p%" )$s p%$+"& ! $! o"! $# 1109C )#h #h" +o"r s%(h#%/ $;$r* A'#"r $! hour, #h" +ru+%" )$s #r$!s'"rr"& !#o $ &"s++$#or $!& )$s +oo%"& 'or 15 -!u#"s* Th"!, #h" 2
+ru+%", )#h #h" s$-p%", )$s )"(h"& ! $! $!$%/#+$% $%$!+"* A'#"r o#$!!( #s )"(h, # )$s rou(h# $+ #o #h" o"! $# 1109C 'or 30 -!u#"s* Ths pro+"ss )$s r"p"$#"& u!#% #h" $!$%/#+$% $%$!+" &sp%$/"& +o!s#$!# r"$&!(s o' #h" )"(h# o' #h" +ru+%" +o!#$!!( #h" s$-p%"* C* Pr"+p#$#o! o' M(N> 3PO@>2O A 6%#"r p$p"r )$s )"(h"& $!& p%$+"& ! $ &"s++$#or* Th" '"r#%"r s$-p%" ! #h" +ru+%" )$s #r$!s'"rr"& !#o $ 250-L "$"r* 0 -% o' &s#%%"& )$#"r )$s pour"& !#o #h" "$"r* S!+" !o# $%% so%&s &sso%"& ! #h" )$#"r, #h" -#ur" )$s 6%#"r"& #hrou(h $ 6%#"r p$p"r &H"r"!# 'ro#h" )"(h"& 6%#"r p$p"r #o o#$! $ +%"$r so%u#o!* Th"!, 5 -L o' 10 M$(!"su- su%'$#" h"p#$h/&r$#" )$s $&&"& #o #h" +%"$r 6%#r$#" 'o%%o)"& / #h" s%o) $&&#o! o' 150 -L o' 2 M $--o!$* Th" so%u#o! )$s %"'# #o +o-p%"#" #s pr"+p#$#" 'or 15 -!u#"s* A'#"r $%%o)!( #h" +o-p%"#" pr"+p#$#o!, #h" -#ur" )$s 6%#"r"& #hrou(h #h" pr")"(h"& 6%#"r p$p"r* A'#"r 6%#r$#o!, #h" pr"+p#$#" )$s )$sh"& )#h 5 -L o' &s#%%"& )$#"r #)+" "'or" )$sh!( # )#h 10 -L o' J5 "#h$!o% 'or #)o #-"s $s )"%%* Th" 6%#"r p$p"r
RESULTS AND DISCUSSIONS
I! #h" "(!!!( o' #h" "p"r-"!#, +o!s#$!# )"(h!( o' #h" +ru+%" )$s &o!"* Ths pro+"ss )$s !"+"ss$r/ 'or s"+ur!( #h$# #h"r" )$s !o -os#ur" ! #h" +ru+%" )h+h -$/ $H"+# #s )"(h# s!+" -os#ur" -$/ " $!sh"& )h%" #h" "p"r-"!# )$s "!( +o!&u+#"&* Th" )"(h# o' #h" +ru+%" us"& ! #hs "p"r-"!# )$s
*3JJ5 (r$-s $'#"r u!&"r(o!( +o!s#$!# )"(h!( T$%" 1*1* A'#"r o#$!!( #h" '"r#%"r s$-p%" $!& #s )"(h#, )h+h )$s 3*0225 (r$-s, #h" s$-p%" )$s h"$#"& #o "p"% $!/ -os#ur" +o!#"!# ! #h" '"r#%"r s$-p%"* I# )$s $ssu-"& #h$# #h" '"r#%"r #o h$" -os#ur" s!+" '"r#%"rs !""&s -os#ur" )h+h )%% $&& up )#h #h" so% #o &sso%" #h" !u#r"!#s ! '"r#%"rs, -$!( # "$s/ 'or p%$!#s #o o#$! su+h !u#r"!# #hrou(h #h"r roo#s 4* Th" s$-p%" )$s (r!&"& "'or" "!( p%$+"& !s&" #h" o"! #o -$" sur" #h$# #h" s$-p%" s ! 6!" p$r#+%" s" )h+h )%% $%%o) -or" -os#ur" p$r#+%"s #o "s+$p" 'ro- #h" s$-p%"* As&" 'ro- h"$#!( #h" s$-p%" ! $! o"!, # )$s $%so +oo%"& ! $ &"s++$#or )h+h $sor"& $!/ -os#ur" %"'# ! #h" s$-p%"* A'#"r ("##!( r& o' #h" -os#ur", #h" -$ss o' #h" s$-p%" )$s &"+r"$s"& #o 3*003 (r$-s o#$!"& )"(h#s su--$r"& ! T$%" 1*2* I! #h" "p"r-"!#, $%% )"(h!( pro+"ss"s $r" &o!" us!( $! $!$%/#+$% $%$!+" $!& )"(h#s $r" o#$!"& / &H"r"!+" $!& !o# &r"+# )"(h!( "+$us" #h" $!$%/#+$% $%$!+" s "r/ s"!s#" #h$# # +$! " $H"+#"& )#h ""! #h" -os#ur" +o!#"!#* B/ us!( #h" &H"r"!+" o' -$ss r"$&!(s 'or o#$!!( -$ss o' $ sp"+"s, #h" s"# up )%% " r"-$!"& u!+h$!("& )h%" #h" -$#"r$% #o " )"(h"& )%% " #h" o!%/ o!" #h$# )%% +$us" $!/ +h$!(" ! #h" -"$sur"-"!# r"$&!(s 54* B/ #hs -"#ho& ! )"(h!(, #h" -$ss o' -os#ur" ! #h" '"r#%"r s #h" &H"r"!+" o' #h" )"#, or !#$%, -$ss o' s$-p%" $!& #h" &r/, or h"$#"&, -$ss o' s$-p%" wet $#+!"e wt <'r&e' $#+!"e wt = 9+o&$t(re
)h+h %"$&s #o 0*01KJ0*000 (r$-s o' -os#ur" ! #h" '"r#%"r s$-p%", 3
$!& # s "8u$%"!# #o 0*250*01 o' #h" s$-p%"* A'#"r &"#"r-!!( #h" -os#ur" +o!#"!# o' #h" '"r#%"r s$-p%", # )$s &sso%"& ! )$#"r #o -$" #h" s$-p%" $8u"ous so #h$# pr"+p#$#o! (r$-"#r/ )ou%& " poss%" #o $pp%/ o! #* Th" 6rs# s#"p ! (r$-"#r/ s #o $&& #h" $ppropr$#" pr"+p#$!#s #o h$" $ pr"+p#$#" )h+h +o!#$!s #h" sou(h# sp"+"s 54* I! #h" "p"r-"!#, #h" pr"+p#$!#s us"& $r" 10 -$(!"su- su%ph$#" h"p#$h/&r$#" M(SO@>2O $!& A--o!$ N> 3 #o pr"+p#$#" -$(!"su- $--o!uphosph$#" h"$h/&r$#" M(N>PO@>2O* To s$#s'/ #h" pr"+p#$#" r"8ur"-"!# 'or (r$-"#r/, )h+h s #o h$" (("r p$r#+%"s 'or "$s"r pr"+p#$#o!, #h" N>3 )$s $&&"& s%o)%/ )h%" #h" so%u#o! s +o!#!uous%/ s#rr"& $%%o)!( p$r#+%" (ro)#h #o " '$our"& r$#h"r #h$! !u+%"$#o! $s po!#"& ou# / #h" o! ."-$r!’s R"%$#" Sup"rs$#ur$#o! R$#o:
SS
5 / ""p!( sp"+"s +o!+"!#r$#o! %o)* A%so, s#rr!( #h" so%u#o! pr""!#s #h" pr"+p#$#o! o' -$(!"su- h/&ro&" M(O>* To -$" sur" #h$# #h" 'or-"& pr"+p#$#" )%% " "$s"r #o 6%#"r, &("s#o! )$s &o!"* Ths $%%o)"& #h" 6!" p$r#+%"s o' #h" pr"+p#$#" #o s"##%" $# #h" o##oo' #h" "$"r $!& 'or- p$r#+%"s )h+h $r" s%(h#%/ %$r("r, &u" #o #h" $&sorp#o! o' $ p$r#+%" )#h #h" o#h"r p$r#+%"s, 'or "$s"r 6%#r$#o! 14* Bu# #hs -(h# +$us" -pur#"s #o o++ur, )h+h s )h/ #h" pr"+p#$#" )$s )$sh"& )#h )$#"r $!& J5 "#h$!o%, )h+h s suQ+"!#%/ o%$#%" #o " "$s%/ r"-o"& )h"! "!( &r"&* .h"! #h" pr"+p#$#" &r"&, #s )"(h# )$s o#$!"& $!& #h" p"r+"!#$(" o' phosphorus ! o#h )"# $!& &r/ $ss
o' #h" '"r#%"r s$-p%" )$s +$%+u%$#"& us!( "8u$#o! 2* S-%$r%/, #h" p"r+"!#$("s o' phosphorus p"!#o&" ! )"# $!& &r/ $ss )"r" +o-pu#"& )#h "8u$#o! 3 #o ("# #h" &$#$ ! T$%" 1*3* Table 1.3 Pere!"a#e Val$e% &' P a!( P)O* +! Fer"+l+,er Sa-le
Sp"+"s P ! )"# $ss P ! &r/ $ss P2O5 ! )"# $ss P2O5 ! &r/ $ss
P"r+"!#$(" 5*000*001 5*030*001 11*00*002 11*530*003
M"$!)h%", #h" #h"or"#+$% p"r+"!#$(" o' P 2O5 s 20* Ths )%% -$" #h" #h"or"#+$% p"r+"!#$(" o' phosphorus ! #h" '"r#%"r s$-p%" #o " K*2* As +o-p$r"& #o #h" &$#$ ! T$%" 1*3, #h"r" $r" &H"r"!+"s ! #h" 6!$% &$#$ -p%/!( #h$# "rrors )"r" -$&" &ur!( #h" "p"r-"!# )h+h $H"+#"& #h" &$#$* Th" "p"r-"!# )$s s"!s#" &u" #o #h" '$+# #h$# #h"r" $r" $ %o# o' poss%" "rrors #h$# #h" r"s"$r+h"rs -(h# h$" &o!" )h+h )%% $H"+# #h" &$#$* O!" o' )h+h s #h" poss%#/ #h$# #h" +ru+%" or )"(h# 6%#"r p$p"r )$s $++&"!#$%%/ #ou+h"&* Th" o&/ u&s, %" s)"$# or o% +$! $&& -os#ur" #o #h" s"#up $!& $H"+# #h" )"(h#s, &u" #o #h" s"!s##/ o' #h" $!$%/#+$% $%$!+"* A!o#h"r s )h"! #h" +ru+%" ro" ! #h" -&&%" o' #h" "p"r-"!#* Ths $s+$%%/ -"$!s #h$# #h" "p"r-"!# -us# " s#$r#"& $%% o"r $($!* A%so, +$r"%"ss!"ss ! #r$!spor#!( #h" +ru+%", or 6%#"r p$p"r, or ""! ;us# ! &r/!( pro+"ss"s -$/ h$" +$us"& so-" so%&s #o " %o)! $)$/, )h+h )%% r"&u+" #h" $++ur$+/ o' #h" )"(h#* CONCLUSION RECOMMENDATION
AND
I! #hs "p"r-"!#, #h" s"#up h$s $ h(h rs o' &$-$(" )h+h +$! r""+# #o #h" &$#$ $!& r"su%#s* Co!s&"r!( #h$# #h" #h"or"#+$% $%u" o' P2O5 s 20 o' #h" s$-p%", )h%" 'or P, #h" #h"or"#+$% $%u" s K*2* Co-p$r!( #h"s" $%u"s #o #h" &$#$ ! T$%" 1*3, #h"r" s $ ( &H"r"!+"* Epr"ss!( #h"s" !#o p"r+"!# "rrors, #h"r" )%% " $! $"r$(" o' 2* "rror* Ths -(h# " $ h(h p"r+"!# $!& # s "!ou(h #o s$/ #h$# #h" "p"r-"!# s $ '$%ur" r "rror u# +o-p$r"& #o #h" &$#$ o' #h" o#h"rs, #h" P $!& P 2O5 $%u"s $r" +%os" #o "$+h o#h"r* Ths -(h# su(("s# #h$# #h" $+#u$% $%u"s $r" +%os" #o #h" &$#$ r"+or&"& $!& #h$# # s $+#u$%%/ $ su++"ss* Th" &$#$ -(h# h$" ""! "##"r ' #h" "p"r-"!# )$s +o!&u+#"& )#h -or" +$u#o!* A! "$-p%" s ! #r$!s'"rr!( o' +ru+%"* B/ $++&"!#$%%/ ho%&!( #h" +ru+%" )#h $r" h$!&s or r"$!( #h" +ru+%"s, #h" "p"r-"!# -us# " r"p"$#"& 'ro- #h" "r/ "(!!!( 'or $++ur$+/* A%so, )h"! -o!( )#h #h" 6%#"r p$p"r +o!#$!!( #h" pr"+p#$#", #h" p$p"r -us# !o# " #ou+h"& )#h $r" h$!&s, $!& -o"-"!#s shou%& !o# " #oo su&&"!, #o pr""!# sp%%!( $!& ("!"r$%%/ %oos!( pr"+p#$#" p$r#+%"s )h+h )%% $H"+# #h" $++ur$+/ o' #h" "p"r-"!#*
REFERENCES
14 R$##"!ur/, E*M* I!#ro&u+#o! #o T#r-"#r+ $!& 7r$-"#r+ A!$%/ss* P"r($-o! Pr"ss L#&*, Lo!&o!* 1J* 24 Tr"$&)"%%, F*P* A!$%/#+$% Ch"-s#r/ o%* 1* Br$u!)or#h Co*, Broo%/!* 1J1 34 hop$r, S*M* B$s+ Co!+"p#s o' A!$%/#+$% Ch"-s#r/* N") A(" I!#"r!$#o!$% L#&* 1JJK 4 P%$!# $!& So% S+"!+"s "Lr$r/* So%sP$r# :Phosphorus $!& Po#$ssu! So%* h##p:p$ss"%*u!%*"&up$("s!'or-$#o !-o&u%"*php &!'or-$#o!-o&u%"V113003#o p+or&"rV2 $++"ss"& F" 2, 2015* 54 UC D$s Ch"-.* KB:P"+p#$#o! 7r$-"#r/*h##p:+h"-)*u+&$s*"& uA!$%/#+$%WCh"-s#r/A!$%/#+$%WCh" -s#r/W2*00K3AW7r$-"#r+WM"#ho &sKB3AWPr"+p#$#o!W7r$-"#r/ $++"ss"& F" 23, 2015*
5
APPENDI/ Table 1.1 C&!%"a!" 0e+#+!#
M$#"r$% Cru+%" ."(h# 1 Cru+%" ."(h# 2 A"r$("
Cru+%" )#h S$-p%" ."(h# 1 Cru+%" )#h S$-p%" ."(h# 2 A"r$("
."(h# ( *3JK0*000 2 *3010*000 2 *3JJ50*00 03 *3350*000 2 *3350*000 2 *3350*000 3
Table 1.) De"er-+!a"+&! &' M&+%"$re
."(h# o' E-p#/ Cru+%" ."(h# o' Cru+%" )#h S$-p%" ."(h# o' ."# S$-p%" ."(h# o' Dr"& S$-p%" ."(h# o' Mos#ur" P"r+"!#$(" Mos#ur" S$-p%" C$%+u%$#o!s:
Mass of water =3.0225 g −3.0036 g moisture =
0.0189 3.0225
× 100
1.199 g ×
%P ( wet )=
30.97 g 245.44
3.0225 g
g
× 100
*3JJ50*0 003 ( *3350*00 03 ( 3*02250*000 2( 3*0030*000 ( 0*01KJ0*000 ( 0*30*01
1.199 g ×
%P ( dry )=
30.97 g 245.44 g
3.0036 g
1.199 g ×
P2 O 5 ( wet )=
141.99 g 245.44 g
3.0225 g
× 100
g 245.44 g × 100 3.0036 g
1.199 g ×
P2 O 5 ( dry )=
× 100
141.99