The present invention provides aza-BODIPY compound having formula 1 useful for detection of nitrite ions in an aqueous medium. The invention also provides a process for the preparation of aza-BODIPY compound having formula 1. For detecting nitrite ions, a dipstick device made by coating the assay powder of formula 1 in alumina over a thermoplastic or a glass solid support is used. The detection event can be monitored by noting the color change on the surface of the dipstick. Detection event by means of color change is selective for nitrite ions when compared to all other biologically important ions like SO
4
2−
, Cl
−
, HSO
3
−
, CO
3
2−
, CH
3
COO
−
, NO
3
−
, S
2
O
3
2−
, N
3
−
.
本发明提供了一种具有
化学式1的aza-BODIPY化合物,用于在
水介质中检测
亚硝酸盐离子。该发明还提供了一种制备具有
化学式1的aza-BODIPY化合物的方法。为了检测
亚硝酸盐离子,使用在热塑性或
玻璃固体支持物上涂覆
化学式1的测定粉末的浸渍棒装置。可以通过观察浸渍棒表面的颜色变化来监测检测事件。与所有其他
生物重要离子(如SO42−、Cl−、HSO3−、CO32−、CH3COO−、
NO3−、S2O32−、N3−)相比,通过颜色变化的检测事件对
亚硝酸盐离子具有选择性。