(0.1687), even smaller than that of the well known
nickel diacetyldioximate (0.2031). The proposed
method is very suitable for the determination of
10–70 mg of Sn. Its standard deviation (n10) at
the level of 20 mg of Sn was found to be 0.08 mg.
Its special features may be summarized as
follows:
1. Simplicity: ]5% of Sn can be determined by
taking 0.2 g of sample or even an aliquot there
from. This makes the separation simpler and
easier.
2. Selectivity: a single clear-cut precipitation in
combination with masking suffices to eliminate
most of the interferences and render the determination
specific for Sn in most cases.
3. Versatility: provision is made for eliminating
interferences in special cases, such as correction
for Mo and V. This makes it also applicable
to the analysis of Ti alloys.
4. Flexibility: it is flexible in the technique of
sample decomposition and simplifications are
possible in the absence of certain interferents.
Owing to these features the proposed method
will find many industrial applications. The results
for analysis of some simulated and industrial samples
are shown in Tables 4 and 5 respectively.
4. Conclusion
A new gravimetric method is proposed for the
macro-determination of Sn. It is simple, selective,
versatile and flexible, hence would be very
promising.
Acknowledgements
Grateful thanks are due to all members of the