laboratory

1. Prepared by:
Nuridayu binti Yusmaidi
2015673712
Fertilizer analysis

2. • WEEK 1 &2 – sample preparation for N, theory
of elemental analyzer
• Week 3 & 4- BOE analysis, soil analysis (total
phosphorus, available phosphorus and
moisture content)
• Week 5- fertilizer analysis (digestion, moisture
content, particle size)
INTRODUCTION

3. fertilizer-substances that added to the soil or
plant tissues.
What is fertilizer?

4. Objective
Determination
of element N,
P, K, Mg & B
Provide
nutrient for
healthy plant
growth
To check
specification
of elements
by company
Determination
of the moisture
content

5. Types of
fertilizer
Straight
fertilizer
Example: Rock
phosphate(RP)
Compound
fertilizer
Example:
R3Z,AJIB RCF
Mixture
fertilizer
Example: RCGB

6. Register
Place
fertilizer
samples in
the vial
Grind
Weigh
2.5g of
fertilizer
samples
Add distilled
water until
the mark at
75mL
METHODOLOGY
Determination of P, K, Mg and B using ICP machine

7. Add 10 mL
of HCl and 5
mL of Nitric
Acid
Digestion
Cool the
samples for
5 minutes
Add distilled
water until
the volume
of beaker
200mL
Transfer into
the 500mL of
volumetric
flask
filter
Keep the
plastic
vial in
the tray

8. 1. Weigh 10 g
of raw
material into
the dish
2. Place the
dish into the
oven for 2
hours at 103°C
3. Cool in the
desiccator
(10 minutes)
4. Weigh
again and
record the
reading
5. Repeat step
2 until 4 for 2
times
6. Dispose
the
sample
Determination of moisture content

9. RESULTS
Determination of N, P, K, Mg and B

11. CALCULATION CHECK STATUS SPEC (R3Z)
Element % N
(Ammonium
sulfate, SOP)
% P2O5
(Rock
Phosphate,
RP)
% K2O
(Murite of
Potash,
MOP)
% MgO
(Kieserite)
% B2O3
(Boric)
Spec
elements
9.0 6.0 18.0 2.0 0.5
Analysis
data
12.1 6.7 18.4 3.0 0.5
Calculation
=
92
100
× 9
= 8.28
= 6.0 −
0.5
= 5.5
=
92
100
× 18. 0
= 16.56
= 2.0
− 0.5
= 1.5
=
60
100
× 0. 5
= 0.3

12. Determination of moisture content

13. Percent by weight
=
𝑊1 − 𝑊2 x 100
𝑊1
W1 is the weight in g of the
sample taken.
W2 is the weight in g of the
sample after drying to
constant weight.
Sample ID = 327
Sample weight (g) = 10.000
Dish weight (g) = 29.470
Weight (dish + sample) after (g)= 39.076
W1 = 10.000
W2 = 9.606
% =
10.000 − 9.606
10.000
× 100
= 3.94%
EXAMPLE CALCULATION MOISTURE (%)

14. CONCLUSION
ELEMENT FUNCTION
N To assist the growth of trees.
P Important in cell division and
development of new tissue.
K Required in large amounts for proper
growth and reproduction of plants.
Mg Building block of chlorophyll which
makes leaves appear green.
B Role in forming and strengthening cell
walls.

15. Chlorophyll (C55H72N4O5Mg)