Table 2 Elemental analysis of polystyrene bound silica particles.

From: Preparation of mixed-mode stationary phase for separation of peptides and proteins in high performance liquid chromatography

Element

Weight %

Current study a

Current study b

Current study c

Ref.35

Ref.42

Carbon

2.7%

2.9%

6.35%,

7.93%

10.21%

Nitrogen

1.11

1.32

2.21%

0.17

0.85

Sulfur

–

–

–

0.84

2.12

  1. aCorresponds to the product (4) in Fig. 1 (reaction scheme).
  2. bCorresponds to the product (5) in Fig. 1 (reaction scheme).
  3. cCorresponds to the product (6) in Fig. 1 (reaction scheme).
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